Willy Caballero has lauded Chelsea teammate Kepa Arrizabalaga for how he has adapted to the Premier League.

The 24-year-old become the world's most expensive goalkeeper when Chelsea paid Athletic Bilbao a sum of £72million.

But Caballero, who is number two behind the Spaniard, thinks given the "crazy" transfer market, it is unfair to judge Kepa's performance by the fee Chelsea paid.

"First of all, we needed a goalkeeper who plays really well with his feet," Caballero told Goal. "He is doing really well with that; he has confidence and a good pass. Long and short.

"As well as that, he has very quick reactions, good hands and he is doing well. I thought he might need a few weeks and months because adaptation to the Premier League sometimes needs a little bit of time but from the first game, he has been doing really well.

"I think that football has gone crazy in the last three or four years. When we talk about a player for the money that we spent, in this market, I think it is a little bit crazy.

"We shouldn't talk about money, we have to talk about his performances and I think his performances have been really good."