Hernanes makes sense, he can play as an AM or a cover for Marchi. Can take free kicks and corner as well. I am no big fan of him, but with so little time left, it's a move that make sense. The player is already well versed with the Italian league, don't have to worry about league acclimatization. This is a short term signing to help Allegri. Cheap price as well, I rather someone else but under the current circumstances it makes sense.