Rangers star Jason Holt is hoping midfielder Ryan Jack is successful in appealing his red card against Aberdeen.
Jack was dismissed at the weekend for a wild challenge, adding to a growing list of ill-discipline this season from the Ibrox player.
Jack signed for Rangers in the summer and has become a controversial figure at the club already.
Holt believes Jack has been an important signing so far, and his red card should not detract from his contribution.
He told The Mail: "'It would be a big blow to lose him as he has been a good player for us this season.
"He has been a really good signing and his performances have been good.
"I didn't see the tackle at the time as it happened too quickly and I haven't watched it back. Ryan is a committed and determined player."
Critics would say Jack is too committed, and unable to control his actions in the heat of a game.
He needs to show he can reign it in, and avoid any red cards between now and the end of the season, although now he has become a target for opposition and a player to watch for referees, it will not be easy.
Jack needs to let his football do the talking, and back up Holt's assertion that he is a 'really good' addition to the team.