"But with his move it is important that he gets a run in the top flight because he's certainly good enough to play there. He'll play a vital part in Derby County staying up this season."
City's Academy Recruitment Officer Barry Poynton said: "Tyrone Mears has a good story to him.
"A scout had mentioned him, so we went to see him playing for Oldham Schools at Under 14 level, the problem was that he had a schoolboy contract and a professional contract guaranteed at Warrington Rugby League Club!
"He was a fantastic rugby league player and could be playing Super League now. That's where his career was and the hardest bit with Tyrone and his parents was convincing them his future was as a footballer."