Tell Nagelsmann to start his Spanish class and prepare for the job in 2022, honour Koemann's contract too.
RM seems to be keeping Zidane,Liverpool City,Chelsea, PSG & Milan have their coach for next season. Tottenham has the money but lacks the appeal for coach like him tbh.
Only 2 big clubs that might have coaching vacancy are Manu & Juve, the later always stick to Italian coach (Deschamps is the only non Italian coach they had since 1974, and he stayed there for a year in 2nd division, and was their ex player) and I doubt he will take NT at that age.
If Manu finished 2nd, I think Ole stays. That leave us with leverage to get him in 2022.