Austria coach Ralf Rangnick feels Christopher Nkunku will be regretting signing for Chelsea.

The France striker will leave RB Leipzig for Chelsea this summer.

Former RB Leipzig boss Rangnick told ZDF: "At the moment, no matter who comes as a coach, you can't really recommend anyone to go there (to Chelsea).

"The very first thing to do is establish some sort of strategy and reduce the squad to a reasonable size that any coach can work with.

"I'm also thinking of a player whose commitment to RB Leipzig I was at least a little involved in - Christopher Nkunku - for me one of the best attacking midfielders currently available. And who, in my opinion, decided to move to Chelsea far too early.

"Imagine he comes to a club that is in the state it is at the moment. Such an outstanding player. This hurts my heart personally. If I were his advisor or his father, I would be very worried right now."