Worth noting that we do not necessarily know how Slot sees his midfield. If he wants two holding then potentially he's going to need midfielders with a wider range of passing than Endo can provide. Whatever the case though, the club would be foolish to let go unless a) we have a very good, younger replacement and b) we are confident they can hit the ground running.
I'd rather be cautious with this one; a new six, Endo as rotation, and then we can manage Bajectics minutes makes the most sense to me. Baj needs to be an additional resource this season both for his future, and we also have to safeguard ourselves against another long-term injury. There are enough minutes to go around, especially with the implementation of five subs.