Bobby is an animal at CM. I play him at CDM for a 4231 alongside Guardiola. I have pep on drop between defenders with Bobby on get forward. He's just everywhere when it comes to closing down attacks or getting the ball and moving it up field. Playing him in this position I don't expect him to grab goals or many assists but he pops up on the edge of the box for a long shot or drives from deep when a player is on drop back. He plays in the "Pirlo" role of creating from deep and often drags my opponent out when Bobby starts finding efforts getting close from long range.
I've used baby Seedorf, De Bruyne, Kante all in a similar position and none of them compare to Bobby.
Shooting (to an extent)
He does on occasion miss the absolute sitter but then so does every card.
Height (I like big dominating players in the middle of the park so he's a tad under size)