Manchester United fullback Fabio da Silva was shocked by the injury suffered by Antonio Valencia on Tuesday night.
United have announced Valencia is unlikely to play again this season.
Fabio said: "I was very sad about his injury, he is one of mine and Rafael's best friends at the club, and an excellent player.
"I will go with my brother to visit him at the hospital, but I wish him a speedy recovery. He's a great guy, fun and always helpful."