Luckily, at 19, he's young enough to bounce back with no long term effects, at least not physically. Serious injuries can also affect a player's mentality though, making them more wary of going into physical challenges. Something tells me Reece is sensible enough to make calls like that anyway, so I'd be confident that he'll come back as good as ever.
If he needs to regain his fitness / sharpness on loan, I'd be delighted to see him back, though I don't like the circumstances in which they would've happened. He more than earned the right to be playing at a higher level with his development last year, and I hope that whilst that may be delayed slightly, he'll still have the opportunity to achieve what we know he can at the very top of the game.
Get well soon, whether we ever see Reece in a Latics shirt again or not changes nothing. In one season, he's made a set of life-long friends and supporters in Wigan.