From fan to boss going upBy Joe Patrick

CAMBRIDGE UTD 3O’Neil 25, Hoolahan 57, Mullin 80GRIMSBY TOWN 0STAR MANGREG TAYLOR Cambridge UtdVOLLEY GOOD: Liam O’Neil shoots Cambridge aheadPICTURES: AlamyCambridge’s Declan Drysdale, left, and Jack Iredale celebrateStar GameMARK Bonner reflected on the “mad story” that led to him becoming a promotion-winning Cambridge United head coach.Bonner watched the U’s growing up and worked his way through the ranks before taking charge last March, and victory over Grimsby secured sec...