Rangers boss every confidence in Old Firm referee McDonald

And the Ibrox boss insists the controversy surrounding match officials in the opening weeks of the season has been blown out of all proportion.

He said: "It's one of those games where there is a lot of tension involved and it brings a little bit of pressure on everybody in the game - not just the referee.

"The referees will handle that situation. I think this whole situation has been blown out of proportion a little bit.

"In all the time that I've been involved, the referees and linesmen have always made errors the same way that players and managers make errors as well.

"There is a lot of tension in the Old Firm games and the referees have to experience it and learn how to handle it and I'm sure on Sunday the game will be handled very well.

"The referees have a tough job, as we all do at different times, and we just have to get on with it.

"It's difficult now because of the scrutiny they are under in terms of television and aspects of the media but it happens everywhere and referees and linesmen just have to improve and cut out their errors in the same way that managers and players have to do to keep their position."