well for no other reason Brian Horton has the experience that Nick does not. But its down to Nick. It would not surprise me though.
I'm not sure we need him. His reputation has been significantly tarnished working under PB. If he was the mastermind behind our success a couple of years ago, why didn't he see what PB was really like towards the end of his tenure at City and not following him to PNE? For me, that ship has sailed...
....or put another way, maybe he knew what PB was like and your perception of PB is where the problem lies.
Yes because his antics and tactics at the end of his tenure at City were spot on. Not to mention some of the stories coming out of PNE. Not taking anything away from what was achieved in the past, but I wouldnt want him back.