The Scottish tactician, who left St Andrew's for Aston Villa in the summer, did not play Fahey in his customary central midfield role and the 28-year old Republic of Ireland international feels that the oversight certainly hindered his form.
"I want to make one of those midfield spots my own, because since I've come I haven't really had a chance in there," said Fahey who has recently returned from injury.
"There's been excuses about not playing me in there, and playing a three.
"I think I was a little bit undervalued, yes.
"You are never going to see the best of me out on the left and you're never going to see the best of me if I'm thrown into the middle one game, then back out to the left one game.
"I need consistency in there to start learning the position again, I haven't played there for that long.
"It's easy to forget how to play in there. I need a run of games and to learn the role all over again.
"I need games to get in there and know the position again, get a consistent run. I definitely feel I'm more suited to the middle."