Alejandro Garnacho left Old Trafford on crutches after Manchester United's draw against Southampton.
Garnacho started on the bench on Sunday afternoon and he replaced Jadon Sancho in the 73rd minute. He was soon forced to receive medical treatment after appearing to get caught between Kyle Walker-Peters' legs.
The youngster attempted to continue and he returned to the pitch, but he was eventually substituted off with a minute of normal time remaining. He then headed straight down the tunnel and left the stadium on crutches.
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The extent of Garnacho's injury is not yet known but Erik ten Hag was asked for an update on the player after the game.
Ten Hag told MUTV: "Yes, he had a bad tackle. His ankle was twisted. I didn't take the risk and I took him off."
Garnacho has made 15 appearances in the Premier League this season and four of those have been starts. The 18-year-old is close to signing a new deal to extend his Old Trafford stay.
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