He's the last player I'd want for a 6. His talent is forward runs not holding position or winning the ballYou can't compare VD Beek and Ziyech, so i don't understand the discussion at all. Two totally different players, except for the fact they both can play on 10.
If you want a hardworking passmaster with a lot of risk in his way of playing for the 10 position or as a false winger. Buy Ziyech.
If you want a 6, 8 or 10. Supersmart box to box midfielder. Buy VD Beek.