Pep Guardiola says decisions on the availability of Kyle Walker, John Stones and Nathan Ake will be taken tomorrow, ahead of the home game with Watford.
Walker has been out since damaging an ankle in the goalless draw at Atletico Madrid, while Stones and Ake picked up niggles in the midweek win over Brighton.
That means the Blues have a looming crisis for the Champions League semi-final first leg against Real Madrid next week, with three defenders doubtful, Joao Cancelo suspended and Ruben Dias only just back after seven weeks out with a hamstring problem.
City need to beat Watford to open a four-point gap over title rivals Liverpool ahead of their Merseyside derby clash with Everton the following day.
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