What do mean he's not an improvement over what we already have? Do you seriously rate players such as Marchionni and Palladino in the midfield? We don't even have capable replacement for Camoranesi and Nedved on the wing, unless we consider Giovinco a winger, which he really isn't but he can play there. I mean, Stankovic, no matter how much people detest him, gives this side more experience (which every single person who has something against Arsenal is inanely bitching about, standing against buying young talents) and also provides us with more creativity. He can fill in at numerous roles, plus there's always the chance that he can perform a helluva lot better than what he did at Inter, just like Cannavaro, because we all know players at Inter can only perform to 3/4 of their potential.
So what's the problem?
So what's the problem?

Palladino and Marchionni are better than Stankovic by default. Do I have to remind you of the Italian blood factor each and every time we mention football talent?
