I think since Lazio’s game happens first, he’ll be in the squad to play just incase Immobile doesn’t build on his tally (he’s only 3 behind with 2 games left). If Immobile adds to his tally, it would make it very hard for him to catch up so by that time he’ll know not to play and probably end up just being an unused sub (or at best coming on late in the game). That’s my theory anyway.