Where would van Gaal play Bale?
LW: Young, Memphis, Di Maria
RW: Di Maria, Mata, Januzaj
We can't always bench one of Rooney/Bale/Di Maria because of their wages, therefore a player would need to leave. I don't think it will be Young since he's proven his worth as squad player. Di Maria is more likely (I still don't believe he will leave) if Bale is coming here. I don't think Di Maria will play in midfield next season either, he has a different skillset to what van Gaal wants from his midfielders and hasn't used him there in a while now. Therefore I don't think van Gaal is interested even if RM insist on selling him. The only realistic spot for him would be as a striker (which he doesn't suit van Gaal's profile of) and we'd see Rooney in midfield again since he's undroppable.
Especially if the transfer ban is true why would they sell their record transfer with 3 years left on his contract for a reduced price because of a form loss? Their players get boo'd all the time and they won't take more than a 10m loss (I personally don't think they'll take one at all tbf). That means he would cost 70m at least, meaning we've already spent 90m on 2 wingers, while we still need midfielders, defenders, a fullback and maybe a goalkeeper. I don't think we can afford all that in 1 transfer window.
He'd also be the 4th left footed winger (including Mata) and this would be too 'unbalanced' for van Gaal or mean the end of Januzaj (Memphis, Di Maria and Mata aren't old enough to decline soon).
For the price, and for what he offers (Memphis is direct and can score long range screamers too), I hope we stay away from him.