As much as we'd all like to see several ins and out it just won't happen. I really think Allegri has been brought in to get more out of this group. Of course some will leave more than some will join.
I look at that squad and if we have a fully fit and healthy squad to choose from under Allegris guidance then I rally do us being at the top of serie A again and making it further in the CL than we did last season.