Manchester City striker Erling Haaland is a doubt for his side's FA Cup semi-final against Chelsea on Saturday.
Haaland was substituted late on during Wednesday's Champions League quarter-final defeat on penalties by Real Madrid.
City boss Pep Guardiola said after the game that the 23-year-old had asked to be taken off.
"We will see," said the Spaniard on Haaland's availability to face fellow Premier League side Chelsea at Wembley.
"It was a tough game, a lot of action, high intensity for both sides. Erling felt something, a muscular issue. That's why he told me he could not continue.