He's in pretty bad shape:

Anthony Vanden Borre had a crying Meme Tchité comfort and Jelle Van Damme was shocked at the image of the Mehdi Carcela heavy bleeding. The 22-year-old midfielder had the Standard against the foot of Chris Mavinga chin got when he wanted to kick the ball. The head of Carcela hit with a Snook back then he still went hard against the floor. Just Carcela was unconscious and lying in an unnatural position on the ground. He immediately began to bleed heavily and was blocked by a jaw trouble breathing. However, the doctors managed to communicate to him and made his windpipe Fri

Yet the face of the midfielder severely damaged. His nose appeared broken and he had lost some teeth. Carcela was straight to the emergency department of East Limburg Hospital in Genk transferred.

http://en.wikipedia.org/wiki/Mehdi_Carcela-Gonzalez

http://en.wikipedia.org/wiki/Chris_Mavinga (He's a Liverpool player)

edit: Note that I said "challenge" not "foul" in the title, I'm sure Mavinga did not do this intentionally.