By Jamie Spencer Wayne Rooney has accused former Manchester United teammate Cristiano Ronaldo of becoming a ‘distraction’ for the club this season because of his ‘unacceptable’ behaviour in recent months. Having made a sensational return to Old Trafford at the start of last season, Ronaldo had asked to leave United during the summer after the club failed to qualify for the Champions League. No suitable offers were forthcoming, with Sporting CP among the last clubs to explore a potential deal in the final days of the summer transfer window. Ronaldo, who turns 38 in February, has fallen out of f…