Leicester City midfielder Wilfred Ndidi has been ruled out for three months with a muscle injury.
A three-month absence could see Ndidi miss 15 of Leicester's remaining 20 league games this season.
"For Wilf, it will be a long time," said Foxes boss Enzo Maresca.
"It could be three months. It looks like a muscle problem, but an important one so we now see in the next hours."
Ndidi, an FA Cup winner with Leicester who is into the final six months of his contract at the King Power Stadium, has been a key member of Maresca's table-topping Foxes.