Don't be so daft, he'd be a fine addition to ye if he does sign, he's turned into a super player over the last 12 months, and we'll be gutted to lose him.
Him going back to ye is far from certain, by the way, the only sure thing yet is he's got a clause in his contract that releases him from us a year early when and if we go down. He'll be signing for some Premier side, have no doubt about that, and as a defensive mid, not a striker, one thing GC got right this year.
As most of ye seem too young to remember your last sojourn in the top flight, take it from me he'd be exactly the type of player you'll need to strengthen your team. He has a year's Premier experience too which few of your squad have. Don't let perceived, and totally misplaced, notions of mercenary behaviour get in the way of welcoming back a quality player.