Chelsea are sweating over the fitness of Fernando Torres after the Spaniard limped off after just 11 minutes in the Champions League win over Steaua Bucharest.
Torres appeared to be limping from the outset of the Blues' win in Romania before eventually being replaced by Samuel Eto'o, who went on to play a part in both first half goals from Ramires and the own goal from defender Daniel Georgevski.
Ramires grabbed his second after a flowing move before Frank Lampard hammered home a fourth to secure Chelsea's first win of the group stage. But the victory was overshadowed by injury to Torres, who has scored two goals in eight appearances this season.
The 29 year old is already ruled out of the weekend's Premier League trip to Norwich City after being red-carded against Tottenham Hotspur, but following the upcoming international break during which Torres is not expected to be involved after being omitted from the quad which played Finland and Chile in September, Jose Mourinho's side face four games in 10 days.
Prior to the game in Bucharest, Chelsea learned that Torres will not face retrospective action from The Football Association after scratching Tottenham Hotspur defender Jan Vertonghen but this latest injury scare could rule him out for the foreseeable future.
"Our doctor is confident it is not a big injury like Van Ginkel's, but we will have to wait for the scans," said Mourinho.
"Torres knows that he doesn't play against Norwich [due to suspension]. Then he knows he doesn't go with the national team so he has time before the next game he can play, against Cardiff. Let's see the scan.
"It is a pity for the guy because he is in a very good moment physically and he played fantastic against Tottenham, and he played today because he deserved to start. It is a pity but that is football."
The injury compounds Mourinho's problems in attack. Eto'o, despite playing a part of both of Chelsea's first half goals, is still to open his account for the club and has looked sluggish this season while Demba Ba has made just one start in all competitions.
Chelsea's plight in front of goal is accentuated by the success of on-loan striker Romelu Lukaku, who has scored three times already for Everton this season, including twice against Newcastle United on Monday.
Mourinho had pledged to give Lukaku first-team opportunities this season but opted to loan out the Belgian on deadline day, and according to Toffees boss Roberto Martinez Chelsea are unable to recall the 20 year old.