Would love Laimer but looks to be Bayern bound.
No one in my list is as good as FDJ and most unrealistic but I'll give it a go:
Nunes from Sporting would be my top choice, truly a box to box player that can do just about everything.
Neves though likely overpriced
Soler, but unsure why hasn't ever stepped up to a bigger team
Barella, probably will never leave Italy
Less proven gambles:
Camara from Salzburg, looked a monster in the UCL
Kone, inconsistent and young but had a crazy run of games this year where he looked like one of the best young players in the German league
Thurman from Nice is up and coming but probably not our level yet, has all the physical tools