Another chance for Legia, but Saganowski somehow fails to convert from six yards out. Awful defending by Celtic again.
PENALTY TO LEGIA! But Forster makes the stop from Vrdoljak's penalty. Celtic somehow survive. A brilliant stop from Forster.
GOAL! Zyro nods home for Legia from the Radovic cross. Forster can't get there. Awful defending really. And a 3-1 lead now in this first leg. Poor defending.
Duda goes for goal, but Van Dijk makes a superb block. Had to get that spot on. Another corner to Legia coming up.
Change then for the home side as Kucharczyk replaces Kosecki.
On comes Griffiths for Celtic with Commons departing the scene after a tough old shift up front on his own.
Emilio Izaguirre arrives as Jo Inge Berget departs for Celtic.
LEGIA MISS THE PENALTY! Ivica Vrdoljak knocks the ball wide from 12 yards after after Forster headed in the opposite direction.
PENALTY TO LEGIA! Mulgrew late on Duda. Had to be a foul. And is a penalty.
What a chance for Legia to make it three. Radovic with a backheel for Zyron, but Forster off his line to make a superb stop.
Celtic make the change now that they are down to 10 men with Beram Kayal taking over from Pukki.
Off we go then for this second half. Long way back for Celtic, who must pass the ball a lot better here.
There goes the whistle. A 2-1 lead for Legia. A lot of work to be done by Celtic in the second period.
RED CARD! Ambrose is miles late on Kucharczyk from the Radovic pass. Celtic now down to 10 men. And have to face a free-kick.
Celtic almost level at 2-2. Matthews picks out McGregor on the edge of the Legia box, but his shot saved by Kuciak.
GOAL! Radovic slides the ball beyond Forster from five yards out. Awful defending. Not sure if Ambrose was fouled there in the middle.
Pukki lifts the ball a few yards wide of goal. Lovely movement, and a superb pass from Commons. But no goal. We remain at 1-1.
Van Dijk hammers the ball long. Commons then with a terrific run and shot for Celtic, but the ball flies inches over. So close to a 2-1 lead for the Scottish champions.
Johansen earns a free-kick for Celtic just inside the Legia half. Astiz is then booked for a late challenge on Pukki. First booking of the night.
GOAL! Radovic drives the ball through the legs of Forster. Bad goalkeeping as Celtic are caught cold a minute after moving head. It is 1-1 now.
GOAL! McGregor scores for Celtic. A quite magical strike. Takes a deflection, and flies over the arms of Kuciak from 22 yards. Celtic with the opening goal. They lead 1-0.
Celtic opting to rest Emilio Izaguirre and Leigh Griffiths this evening. Both men on the bench. Legia get the action off and running then.
Teams: Legia Warsaw: Kuciak, Broz, Rzezniczak, Astiz, Brzyski, Zyro, Jodlowiec, Vrdoljak, Kucharczyk, Duda, Radovic..subs: Jalocha, Dossa Junior, Ojamaa, Saganowski, Piech, Kosecki, Pinto////Celtic: Forster, Matthews, Ambrose, Van Dijk, Lustig, Mulgrew, Commons, Johansen, Berget, McGregor, Pukki...subs: Zaluska, Izaguirre, Bitton, Kayal, Boerrigter, Griffiths, Stokes