Pep Guardiola feared John Stones was going to get injured during Manchester City's FA Cup win against Arsenal after noticing he didn't look ready from the first whistle.
Stones went off with a hamstring injury just before half-time in the 1-0 win and was replaced by Aymeric Laporte, but Guardiola thought his centre-back looked tired and vulnerable to injury.
City have nine days until they next play, away at Tottenham in the Premier League, but if scans confirm a hamstring injury then Stones is likely to miss that game and much of the Blues' February schedule, which includes a Premier League game at Arsenal in the middle of the month.
