Foxes play host to Monaco
Leicester have confirmed they will entertain free-spending Ligue 2 champions AS Monaco in a pre-season friendly on July 27.
Nigel Pearson's men could come up against the French club's record signing Radamel Falcao, who recently joined from Atletico Madrid in a £51million deal.
Carvalho was an unused substitute for Real Madrid in a pre-season friendly against the Foxes in 2011.
The Foxes also face away trips to League Two duo York and Northampton before kicking off their Championship campaign against Middlesbrough on August 3.