The referee blows up for full-time and it's finished Cluj 1-3 Galatasaray thanks to Yilmaz's perfect hat-trick.
There will be four minutes of added time.
Sougou comes within inches of reducing the defecit but can't get enough on the ball to poke it home at the back post.
GALATASARAY SUB: Galatasaray's third and final change sees Altintop replaced by Kaya.
GALATASARAY SUB: The visitors continue to run down the clock, with Sarioglu coming on for Kurtulus.
There's a resigned look about Cluj's players. They know it'll take a minor miracle to turn this one around with less than five minutes remaining.
Cluj venture into the Galatasaray half but Camora's low cross is easily hooked clear.
Colak's heels are clipped on the halfway line. Free-kick.
Hat-trick hero Yilmaz goes down clutching his ribs after coming off best in a challenge. He'll require a spot of treatment but should be ok to continue.
A victory for Galatasaray will take them level with Cluj on four points in Group H.
It's still Galatasaray who are controlling the pace of the game, with the hosts largely chasing shadows in midfield. Is there a way back for Cluj?
CLUJ SUB: Kapetanos makes way for Valente.
GALATASARAY SUB: Amrabat comes on for Bulut.
That's the perfect hat-trick - header, right foot, left foot - and well deserved.
GOAL! Yilmaz gets his hat-trick! Galatasaray break quickly and work the ball to Yilmaz, who turns his man inside out before burying a low shot past Felgueiras!
Cluj make a rare foray forward but Muresan is easily dispossessed.
Cluj have barely been out of there own half in this second 45.
Yilmaz got the ball caught up in his feet there and had to rush his right-footed shot in the end.
Save! Yilmaz has a chance to kill the game off but his shot is well saved by Fulgueiras.
A Cluj free-kick is clipped in towards Bastos but Altintop rises well to head clear.
It's worth remembering that this will be Galatasaray's first Champions League victory on the road for a decade should they see it through to full-time.
Eboue tries to find Altintop but the ball runs through to Cluj keeper Felgueiras.
Will Galatasaray sit back now they have the lead again or will they push for a third?
The visitors continue to dominate possession and are trying to take the sting out of the game.
Credit to Galatasaray, they refused to sit back after conceding and have their reward.
Cluj only have themselves to blame - the defence fell asleep!
GOAL! Galatasaray retake the lead! Cluj fail to clear their lines, Altintop fires a low cross into the box and Yilmaz converts from close range!
Bastos is caught by Kurtulus. Cluj free-kick.
Boos ring around the stadium as Galatasaray enjoy a length spell of possession.
Altintop tries to trick his way into the Cluj box but is dispossessed.
It's game on! By the way, if Galatasaray lose tonight then their Champions League campaign is over.
That really was an excellent goal. A superb through-ball and cool finish.
GOAL! Cluj equalise! Bastos slips through a delicate through-ball and Sougou converts past Muslera!
Colak has gone down clutching his face after accidentally being caught by a flailing arm.
Braga have taken the lead against Group H leaders Manchester United.
Altintop goes into the book for kicking the ball away.
Cluj give away another silly foul in their own half to hand Galatasaray a free-kick.
So close! Sougou flicks on the corner and the sub Bjelanovic can only put his header over the bar! That should have been an equaliser.
Cluj win an early corner.
CLUJ SUB: The hosts made a change at the break, with Bjelanovic coming on for Godemeche.
Galatasaray get the second half underway.
The referee blows up to bring the first half to a close. It's Cluj 0-1 Galatasaray at the break.
The hosts have a late appeal for a penalty waved away. The ball appeared to strike Eboue's arm but the former Arsenal man didn't know much about it.
Kapetanos turns Cris on the edge of the Galatasaray box but the Cluj forward is forced wide before being dispossessed.
Galatasaray are happy to knock the ball around the defence and midfield in order to run down the clock.
Muslera clashed with Sougou after heading clear and the pair will require treatment. Looks like they will both be able to continue though.
Galatasaray keeper Muslera has to be quick off his line to clear with his head from just outside the box.
Muresan goes for goal from the resulting free-kick but fires high and wide from 30 yards.
Galatasaray's Riera is the first player to go into the referee's notebook for a clattering challenge on Bastos.
Cadu gifts possession to Galatasaray. Altintop squares the ball to Yilmaz but the goalscorer's rash shot from distance goes miles over.
Galatasaray's Eboue has made more than 50 Champions League appearance for the Turkish club and previous side Arsenal.
Galatasary have looked very comfortable in possession since taking the lead.
Kurtulus tries to ghost behind the Cluj defence but is flagged for offside. That was close but it looks like the linesman got it right.
Alberto tries to thread in Sougou but Galatasaray defender Nounkeu does well to nip in and poke the ball back to his goalkeeper.
It'll be interesting to see how that affects Cluj. Will the enforced change spark the hosts into life?
CLUJ SUB: The injured Sepsi is replaced by Bastos.
We're back underway. Cluj are preparing to make a sub.
Sepsi's still having treatment. It looks like he's got a deadleg and he may not be able to continue.
Sepsi didn't help himself there. The Romanian just threw himself into Altintop in an attempt to win a free-kick.
Sepsi comes off second best in a challenge with Altintop and will require treatment.
It remains goalless in tonight's other Group H game.
The ball falls to Sougou in the box but the Cluj forward fires his shot into the side netting!
Galatasaray haven't won a Champions League away game for ten years. Will the Turkish club's luck change tonight?
The visitors continue to control possession.
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Cluj appeal for handball after the ball appears to strike a Galatasary arm but the referee waves play on.
Galatasaray had a slow start but they've been on top since and that goal is their reward.
GOAL! Galatasaray take the lead! Altintop whips in a superb cross and Yilmaz meets it with a supreme backward header to loop the ball over the keeper and into the top corner!
Galatasaray are knocking the ball around well in front of the Cluj box, looking for a way through the home defence.
Cluj have scored four goals in the Champions League, despite having only fired in five shots on target in the competition.
Kapetanos gets behind the Galatasaray defence again but Muslera is quick off his line to save his side once more!
Altintop tries to bring the ball down in the box but that gives the Cluj defence time to nip in and clear.
Colak shows quick feet to dart into the box before laying off to Riera but his cross is cleared.
The game's settled down after that hectic start, with neither side able to keep possession.
Colak whips the free-kick into the box but it's headed away.
Inan wins a free-kick for the visitors midway inside the Cluj half.
It's been a very open start, with neither defence inspiring much confidence!
Galatasaray make their first foray forward and Colak bursts into the box before poking a shot just wide of the left-hand post!
Galatasary keeper Muslera did well there to put Kapetanos off otherwise the hosts would be 1-0 up.
Kapetanos ghosts behind the Galatasaray defence to bring down a lofted through-ball but can only put his shot wide under pressure from keeper Muslera!
Cluj win a free-kick and it's neatly worked down the right wing but Galatasaray win back possession.
This is a huge night for Galatasaray and, judging by Faith Terim's pre-match comments, they'll be going all out for the win.
Kapetanos almost latches on to Godemeche's through-ball but Galatasaray keeper Musiera is quick off his line to collect.
And we're off! Cluj get the game underway...
Right, we're five minutes from the off! The teams are walking out of the tunnel and, once the pre-match pleasantries are out of the way, we'll be underway.
Here's what Galatasaray boss Faith Terim had to say ahead of kick-off: "It is important that we are adventurous and we go for the win. All sorts of things can happen here, but hopefully we will play well and not make it easy for our opponents."
The reverse fixture between these two sides on October 23 finished in a 1-1 draw, with a Nounkeu own goal giving Cluj the lead before Yilmaz struck back for Galatasaray 13 minutes from time.
Galatasaray's European form makes for grim reading going into tonight's clash. The Turkish club have won none of their last six European games (W0, D2, L4).
Cluj have won just two and lost six of their 10 home games in Europe excluding qualifying games but Galatasaray have taken just one point from their last nine Champions League group games away from home.
THE TEAMS ARE IN! CFR CLUJ: Felgueiras, Pinto, Sepsi, Piccolo, Cadu, Camora, Muresan, Godemeche, Alberto, Kapetanos, Sougou /// GALATASARAY: Muslera, Cris, Nounkeu, Eboue, Altntop, Inan, Riera, Kurtulus, Colak, Yilmaz, Bulut
Here's what Paulo Sergio had to say ahead of his first Champions League game in charge of Cluj: "It is very important that we adapt to the conditions of the match and do not just play a particular system. Possession does not matter as it is the scoreline at the end of the match that counts, and we want to win. If the game ends in a draw then neither team will be happy."
Ex-Sporting Clube de Portugal and Hearts boss Paulo Sérgio has been in charge of Romanian champions Cluj since October 30, filling the vacancy left by Ioan Andone.
TEAM NEWS: Rafael Bastos was forced off early during Cluj's victory over Brasov on the weekend, and he is Paulo Sergio's main injury concern. Galatasaray boss Fatih Terim does not have any fresh injury worries. We'll bring you the line-ups as soon as we have them.
You can follow the action from tonight's other Group H match here on Eurosport.
Cluj go into tonight's game second in Group H with four points from their three games so far. Runaway leaders Manchester United top the group with nine points, while Braga are third with three points and Galatasaray are bottom with just a single point.
Hello and welcome to tonight's LIVE coverage of the Champions League Group H clash between CFR Cluj and Galatasaray.