The Belgium midfielder suffered the latest of several injuries this
season when he was forced off in the champions' Premier League win at
home to Tottenham on Saturday.
"It is a muscular problem," Guardiola told reporters on Tuesday. "We
will see in the next days but tomorrow he is not available."
Man City can move one point clear of title rivals Liverpool at the
top of the table heading into their final three games of the season with
victory over United.