Callum Hudson-Odoi will miss the rest of this season after rupturing his Achilles in a 2-2 draw against Burnley.
"It's not an easy one. I think it's a serious injury. It's his Achilles tendon. I cannot tell you the extent of it. I don't know -- he'll have to have an examination, but it's not looking good," said Gianfranco Zola after the match.
Hudson-Odoi was rumored to be leaving Chelsea for Bayern Munich this summer, although the nature of his injury may complicate his future.