Didn't AM say that the new training ground was near the M1 corridor, if most of the players are Midlands based,it would make sense to me, and looking at some of the players that he has signed so far they must come from that catchment area.
After all they only play at York Street and probably car share etc on match day's, it's more important to be close to the training ground than the clubs home ground.
I am only talking from mine own experiences, if you were training near to Boston and living in Mansfield or Birmingham you wouldn't sign for Boston.
Just my opinion.