If he's truely a blue - and I've no reason to doubt that he is - my reckoning is this. He'll want to play for us again - but at what price? There was a spanish player a few years ago - Expessera or something like that - and he was 30, having played for his boyhood club his entire career. He announced that he would play for them, without taking a salary.
How about that, Mr Rooney? I mean - one week's pay for you is the equivalent of ten years work for the average fan - so you'll not exactly starve.
Run the Man U contract down, come here for nowt, because you can. Make a difference. Barkley and others looking at greener grass will want to stay, and I reckon we're one Rooney type player away from silverware ... how much of a difference can he make? He'd become a true legend.
But not if he waits too long.