Manchester City face an anxious wait to discover the severity of Sergio Agüero's hamstring injury, with no prognosis expected until Thursday afternoon at the earliest.
The delay is due to the club's medical department wanting to wait for the swelling to go down before conducting a full examination of the player's hamstring.
Agüero suffered the problem a little after scoring a 71st-minute penalty in City's 3-0 win over Stoke City on New Year's Day. The striker was unchallenged as he pulled up in pain when running with the ball.
Agüero will miss Saturday's FA Cup third round tie against Watford and could also be unavailable for the important league game at Arsenal on Sunday week. If so this would represent a sizeable blow to Roberto Mancini as the Argentinian's 10 goals make him the club's joint top scorer, alongside Edin Dzeko.
City's struggle to score prolifically this season has been a major factor in the champions trailing Manchester United by seven points, but with seven goals in their previous two league outings they had appeared to finally be addressing the issue, with Agüero also scoring in the 4-3 win at Norwich City.