Definitely would give some cover for us to buy De Ligt.
It would give them cover for both De Ligt & De Jong with him having versatility to play in both positions. I think it's safe to say that one of them will move on now, I'd be amazed if they have splashed out that kind of money with no intention of shipping a highly sought after asset out.
This could mean De Ligt moving to Juve or to us, could mean that De Jong is on the move (he's been heavily linked to Barca). If he goes to Barca it could see Barca drop their interest in Rabiot or if Barca get Rabiot in along with De Jong with both being linked, it could see one or two central midfielders at Barca (Gomes & Denis Suarez I hope) become available.
The Daley Blind signing could have a bit of a knock on effect depending on what Ajax are buying him for