We just never know. Last year ITK's were willing to bet their kidneys on Bellingham to City, & as it turns out, Real were the only club ever really in the running.
However, there are constant rumours that Musiala wants to return "home" to the PL. The first consideration for Wirtz is price, & the second is prestige.
I can only see Florian moving to one of a few elite clubs in Europe, & without wading through the pluses & minuses of the contenders, I can only realistically see Bayern, Real & City who can cover the transfer fee & offer the prestige.
BUT, how many more central midfielders do Real want to hoard & how will Leverkusen feel about losing their generational talent to Bayern, who'll definitely try to lowball Lever?