I have been thinking what other options if not Mount, its clear ETG wants to buy a no.8 who is good at pressing, can pass the ball around, active in the final third while capable of offering something in attack.
Rabiot - free (box to box, can do both attack and defend, I think that would be the most obvious choice)
Maddison - 50m (good no.10, good at passing and creating chances, but not a no.8, can't defend)
Caicedo - 80m (very good DM with good potential, very good age too, but offers nothing much in final third)
Rice - 120m (very solid and strong DM, but not a no.8, offers nothing much in final third)