To move forward we have to replace either Westwood or Delph as neither offer any goal threat at all. Delph has been impressive towards the end of the season but only in a destructive manner whereas Westwood is more constuctive but not as combative as Delph. I have been impressed with Sylla and he certainly deserves a prolonged run in the team. I think Holman deserves another season to try and get a run in the team to prove his worth. I would certainly keep Herd as he can fit into many positions and not look out of place, a very good squad player.
Delph, Westwood and Sylla looked good in a 3. We do need other options (which could include different types of midfielders) /more competition though. As for Holman, if he could hardly get into a side that really struggled what chance does he have in an improving side and stronger squad? We need to move anyone on who doesn't have a future here.
With the players we've bought in, Gardner back, and youngsters coming through, I think Herd and Holman's days are numbered. They'll be sold as soon as a suitable offer comes in. Both are championship standard at best. Good luck to them, but even if we can't ship them off, I don't see them making the 25 man squad, or appearing again.
I still think Herd would make a decent back up for Lowton.