Again, we've got to accept how we are currently setting up. His job in this system is to fundamentally carry water for the players ahead. And what he does better than Dier would in this system is receive the ball under duress, move it quicker and occasionally he can drop a shoulder and move away from the marker. If he gets moved into Sissoko's 8 role, which was his more natural type role, then yes definitely he would need to take more risk and be more creative. But so far he's mostly really played this central hold/distribute role, or in the CM2, again as the more "holding" type.