So many questions with this one, first whether it is a loan or a permanent deal. If it is just a loan, it could be a way of bolstering the squad while Leko gets some experience under his belt.
If it is something more permanent, then it opens up questions on Chadli's future. If Chadli is going, we don't have many players a natural fit as a number 10, perhaps Morrison and Rodriguez. Could this be a return to a 4-4-2/4-4-1-1?
Interesting though and I like the profile of the player - let's hope he turns out to be a success and not another McManaman/Gnabry.