Chelsea looked set to sign Crystal Palace winger Michael Olise this summer after activating his release clause before the Frenchman committed his future to the Eagles by signing a new contract.

Paul Merson has warned Olise that he could regret not joining Chelsea this summer.

“I was shocked,” Merson told Sky Sports when asked if Olise’s snub came as a surprise. “It might have been because he was at Chelsea before that could’ve been the reason.

“But for me the whole idea is to move up the ladder surely you got to make hay while the sun shines. Form can come and go very quickly a couple of bad games here and there.

“We’re talking about Zaha eight, nine, ten months ago was available on a free transfer who was going to have him? He couldn’t go back to Man Utd, will Arsenal have him? Tottenham might take him if they don’t?

“All of a sudden, no disrespect, he’s playing at Galatasaray in the Turkish league and you’re quite shocked.

“I hope the kid has got it right.”