Renowned sports coach Steve Black has made the bold claim that Joey Barton’s temper is under control – and not even the Old Firm derby could provoke it.

Having worked with the 33-year-old at QPR, Black is of the opinion that the former Manchester City midfielder has learned from his mistakes.

In an interview with The Sun, Black spoke highly of the one-time capped England international, stating that Barton is more likely to thrive in Scotland rather than lose his composure.

He said: “I know it’ll (Old Firm derby) stimulate Joe enormously. He will want to take Rangers to the highest level possible over the next few seasons.

“But what is now clear to Joey is that, in very simple terms, if you do lose your temper and get into trouble with the referee, then that is not helping the team and that’s what counts.”

Barton is well known for losing his temper, most notably being provoked against Manchester City where he attacked Carlos Tevez, Sergio Aguero and Vincent Kompany, and was subsequently banned for 12 matches by The FA.

But the former Sunderland assistant manager believes Barton is a changed man, claiming that he has started to think about others as a team instead of just himself.

He added to the Sun: “There will be potential flashpoints but I tell Joey that if you care more about caring for others around you, than about not controlling your emotions, then you have got a real chance of keeping it under control.

“He’s a family man and a team man and he’s in a happy place and those factors have had positive effects. He’s an intelligent man who has learned from his mistakes.”

In other Rangers news, this Northern Ireland international would welcome a return to the Ibrox,