I still don't think BVB suits him as well as Torino did.
BVB operates in really tight spaces even on counter attacks because they press higher and recover balls higher up the pitch which leaves their attack already congested in opposition territory.
At Torino, they sat deeper, recovered the ball deeper in their 3rd, which left a pasture for Immobile and Cerci to exploit on the break. There will be times BVB win balls in the same manner but alot of the time they recover balls because they outnumbers the opposition in an area. Once they win the ball, they have to play quick passes in that congested area to get out into space.
Torino was sort of like kick and run.
Also, most of Immobile's movements at Torino were in order to get service and finish where as at BVB, the striker makes alot of movements to draw defenders and create room for the attacking wingers.
In short, at BVB you need a striker with a bit more technical ability and smarts (no offsides). What Immobile has working for him is a willingness to constantly run and make important off ball movements and adequate finishing.