Brazil forward Firmino was the third player to leave the field injured in the opening half at Old Trafford.
Roberto Firmino limped off after half an hour of Liverpool’s clash at Manchester United . The forward played a pass and his ankle appeared to give way at Old Trafford.
He was replaced by Daniel Sturridge and must now be a major doubt for Wednesday’s home match against
Jurgen Klopp was forced into a change just minutes after his opposiste number had to make two.
Ander Herrera and Juan Mata were forced off for United and replaced by Andreas Pereira and Jesse Lingard.