Manchester City captain Vincent Kompany has reportedly pulled out of a training session ahead of Sunday's trip to Liverpool.
Manuel Pellegrini's side travel to Anfield looking to close the gap on the Premier League leaders to a point.
However, the Belgium international defender is now a doubt for the game after landing heavily when challenging for a header, according to the Manchester Evening News.
Meanwhile, Sergio Aguero is expected to return after a month out with a hamstring injury.