Liverpool were dealt an early setback at Anfield as Manchester United opened the scoring just 63 seconds into the match – but the goal was overshadowed by concern over a head injury to Alexis Mac Allister in the build-up.
Bryan Mbeumo gave United the lead inside two minutes, racing onto Amad Diallo’s through ball before finishing calmly past Giorgi Mamardashvili.
However, Liverpool players and staff were left frustrated that play continued after Mac Allister went down following an aerial collision.
The Argentine midfielder appeared to be caught accidentally by Virgil van Dijk’s elbow while challenging alongside Mbeumo, remaining on the ground clutching his head as United broke forward.