Dimitar Berbatov is convinced former Manchester United teammate Wayne Rooney sees himself in charge at Old Trafford.
Rooney was named Birmingham City manager last week.
Berbatov told Betfair: "I'm pretty sure he's preparing for the top job because that's the ultimate goal.
When you have someone like Wayne, you can't think he'll stay at a smaller club all his life and manage them, he's building step by step and I respect that.
He's climbing the managerial ladder right now I'm sure at one stage he will go for the Man United job. I think he's preparing for the day his phone rings and he's told that Man United are waiting for him.
I'll be curious as to how he does. I'll be watching."
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