Chelsea ace Diego Costa admits he's impressed by the growth of club football in France in recent years.

Indeed, the Spain international has opened the door to a future move to Ligue Une.

He said: "It is true that Marseille has a great project. PSG is respected in Europe. Monaco has a great project and great players. Ligue 1 is developing.

"I'm happy in Chelsea but in football anything can happen. If I have to change, I have never been to France.

"Why not ..."