Cristiano Ronaldo can become the greatest player of all time at Manchester United - but he must go back to being the 22-year-old kid with no airs and graces who they remember so fondly at Old Trafford, according to Stan Collymore.
Despite leading United's scoring charts with 18 goals this season, Ronaldo has cut a frustrated figure since his stunning return to Manchester last summer - and Mirror Football understands the club would not stand in his way should the veteran decide to leave this summer.
The 37-year-old has earned criticism for failing to acknowledge fans before storming off the pitch on multiple occasions, while Ronaldo could not disguise his anger after being substituted by Ralf Rangnick against Brentford in January.
