The 20-year-old Fatawu was injured while playing for Ghana in an Africa Cup of Nations qualifier against Angola on Friday.
He recently broke into the team at Leicester, which was promoted back to the English Premier League this season and is among the favorites for relegation.
“To happen at a young age is, first and foremost, a blow for him and for us as well,” Cooper said. "We now have to support him in every way in making his rehab and return as smooth and productive as possible, with the hope — although it's a long-term injury — that he comes back a stronger and better player and person.
"Difficult news, really."
(For more sports news and updates, follow Ahram Online Sports on Twitter at @AO_Sports and on Facebook at AhramOnlineSports.)
Short link: