Fernando Torres is facing up to a month on the sidelines, Chelsea manager Jose Mourinho has confirmed.
Torres suffered lateral knee ligament damage shortly after he was introduced from the bench in Chelsea's 3-1 win over Manchester United last weekend.
Mourinho has confirmed the Spanish striker will miss between three weeks and a month, but he is confident Demba Ba will fill the void.
"He is the only one [out]. One month, or three weeks, something like that," Mourinho told reporters.
"Now we lose Fernando for a few weeks with something in his lateral ligament [in his knee] and that is why we have Demba in the squad."
Ba had been linked with a move away from Chelsea during the January transfer window, but Torres' injury has put an end to any hope he had of leaving Stamford Bridge.
"We decided not to open the door to him [to leave] because he is a good player and we need him. The next few weeks is Demba and Samuel and I hope they do well for us," Torres said.
"It's time for Demba. It's a pity because [Torres] is in a good moment, but it's time for Demba. Demba had a fantastic week; [it was] very difficult for me to leave him out of selection because he worked very, very well."