Vidal won't leave at all, considering his relations with the club (he's already said 4-5 times this season that being here was the best thing who could hapen to him and that he'll stay, but yeah, who cares?) and the fact that the project is around him, he's the idol of the fanbase, and valorizes him (as a holding midfielder in a 4-2-3-1 he knows very well that he wouldn't score and shine that match, let's be serious).
Pogba can leave actually, cause he's young, has huge offers (even if someone overrates Raiola's factor, who's pictured like a rapist or something like that. Except Ibrahimovic, who's been a bitch throughout his career, his players don't leave that much, see NEDVED f.e. who stayed even in Serie B) and a normal relation with the club. He's also a future star, a potential Ballon d'Or winner, so there's a lot of curiosity and hype from everywhere, and some big offers will come. But there's nothing done actually, and there's also the possibility he could stay.
Wages for both of them are not a problem, we've increased it and can increase more. Even cause I doubt that the offerers will offer them immediately Ronaldo/Ibra wages... Lol.