Heffernan's three-match ban forced him to sit out the club's League One play-off final victory over Leeds United at Wembley, as well as the opening day victory at Derby last weekend.
But O'Driscoll is happy with the player's response, saying: "Paul deserves credit for his attitude and work-rate.
"A moment of frustration, rather than madness, cost him appearances in a couple of big games, but he has always trained well and never lets his head go down."



