Manchester United goalkeeper David de Gea has handed manager Erik ten Hag an injury concern.
De Gea walked straight down the tunnel during United's game against Liverpool.
United were facing Liverpool in the first game of their pre-season tour of Thailand and Australia.
Erik ten Hag picked a familiar starting xi for his first game in charge and saw his side blitz into a 3-0 lead over Jurgen Klopp's FA Cup and Carabao winners.
However, United are now waiting to see what damage could have been dealt to De Gea after he signalled the bench to take him off.
De Gea was racing against Liverpool new-boy Darwin Nunez for a ball and seemed to tweak something in the process.
Back-up goalie Tom Heaton came on to replace him, but United will not want to be without their number one shot-stopper for too long.
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