“That’s what we believe and that’s what he is here for,” Thomas Tuchel told a press conference when asked if Kalidou Koulibaly is viewed as Chelsea’s top center-back for many years to come despite him turning 31 last month.
“There were always rumors about him leaving Napoli and it was always super difficult – and in the end impossible – to get him because he was a key player.
“It’s nice he takes the challenge right now and we have Thiago Silva, who is even older and super experienced and still at the peak of his game. We hope Kalidou can do the same and play for many years for us.
“He is totally fit and ready for the challenge and he needs to be because we need him in top shape.”
Thiago Silva joined Chelsea at the age of 35 two summers ago, and he’s still one of the best center-backs in the Premier League.
If Koulibaly has a similar age curve, he’s going to play at the top level for five or more years – which certainly bodes well for his future at Chelsea.