I can only think of 2 things that's stopped Neil getting games over this difficult period of the season:
1, Contract talks and possibly agents wanting too much which has caused talks to breakdown.
2, Dan himself, not putting in the hard yards in training which has resulted in the gaffer overlooking him, and (again) a breakdown.
He was never good enough to be a regular starter in the PL, but you'd think with our hectic fixtures over Christmas, he'd at least be in line for some game time to take the pressure off others in the squad. For me, there's something going on in the background that has seen a breakdown between him and the club or Regis himself that doesn't look like there's a road back for him.