Spina hasn't changed one bit since I first saw his YouTube clips: take on defenders most of the time. So much that he sometimes gets dispossessed on the wing when his teammates are waiting for his passes/crosses. I see why Allegri prefers AS. But his playing style caused Atletico defenders lots of troubles tonight.
Would absolutely be ok with that. However if we are seeing wing backs creeping back into our tactics then A.S is actually a great option to have. It's in a back 4 these days he looks petrified to try anything risky.