The Ghanian returned from international action earlier this week and Cooper has since confirmed that he could miss the rest of the Premier League campaign. City welcome Chelsea to King Power Stadium on Saturday (12:30pm GMT kick-off).
On the condition of Leicester’s talented No.7, Cooper said: “It’s not good, it’s a serious injury. He’s had an ACL injury which is going to rule him out for the rest of the season. It’s a real blow, first and foremost for him.
“He’s a young player and having an ACL injury can be quite common, it’s part of football, but it’s still a serious injury. For it to happen at a young age is a blow for him and a blow for us.
“We’ve very much now got to support him in every way we can to make sure his rehab is as smooth and as productive as possible. We hope he can come back a stronger player and person.
“It’s difficult news but now we need to get ourselves together and support him. He’s obviously a big talent and a young player who’s exciting. Every player his age has lots to learn but there is so much to be excited about with him.
“We were enjoying being on his journey in the Premier League and he was showing the potential he has. It’s only a pause. We’ll make sure, as difficult as this is for him, that he comes back being a stronger player and person.
“With the mentality he has, I think that’ll be the case.”
Source: Lcfc.com