I believe their is a reason to be cautious considering the fee being mentioned. Moreover, assesing our midfield option for next season, we would have many players occupying this central midfield role. (if we were to get another box to box creative playmaker beside him like Kroos or Gündogan; the central midfielders we need). So our staff might think if such an addition is necessary, when they just spluged £27m on Fellaini last summer.
If you look at our midfield option if taking into account two more addition, we will Carrick, Carvalho, Cleverley, Fletcher, Fellaini, New cm(?), Powell(?) all vying for mostly two roles in our team. We will have too many fringe players, unless we sell at least one of our current central midfield option. And looking at the list aforementioned, it might be hard for Moyes to decide who to let go considering these players services to the club.
Personally, I will say Carrick and Carvalho should play the holding role. Gündogan and Fellaini box to box. While, Fletcher or cleverley becomes fringe player and Powell goes out on loan until Carrick retires. If the latter will be converted to a dynamic box to box midfielder ala Ramsey.