PSG midfielder Thiago Motta has described Chelsea star Diego Costa as “a crazy person".

He failed to score against PSG in Tuesday's Champions League defeat.

Motta said: “I played with Diego Costa once, for the Brazilian national team.

"He is a very good boy off the pitch. He makes you laugh. But, on the pitch, it is difficult. If you speak to him, you lose focus on the match.

"That is why I let him talk to himself. You get the impression that he is just a crazy person talking to himself."