Manchester City talisman Kevin De Bruyne was substituted shortly after half-time in Saturday's FA Cup semi-final against Chelsea with an apparent ankle complaint.
De Bruyne, keeping his place from the midweek Champions League win at Borussia Dortmund despite eight City changes, appeared to tweak his ankle in a tussle with N'Golo Kante.
The midfielder was quickly replaced by Phil Foden, the match-winner in Germany, as City take no risks ahead of a key stretch in the season.
Pep Guardiola's side are still chasing silverware on four fronts, bidding to reach the FA Cup final ahead of next week's EFL Cup showpiece against Tottenham.
They are in pole position for the Premier League and into the last four of the Champions League.
Only Thomas Muller (18) has more assists than De Bruyne (16) in all competitions this season among all players in Europe's 'top five' leagues.
He ranks fifth for chances created (101) and has also scored eight times.