Let's be honest, the only way to move away from the 3-5-2 was to play somebody out of position, Allegri didn't have a Summer to work with Beppe to get players he absolutely needed
It was either, ride out the 3-5-2 this season (I'd rather stab myself in the gut) and transition next year, or get it over and done with this year, and HOPEFULLY in the Summer we have a starting XI of players who work well and get to play in their favoured position.