▁ 1 9 8 5 , ▁Cambridge ▁United ▁had ▁s ack ed ▁their ▁manager ▁Ken ▁Sh ell ito ▁and ▁were ▁looking ▁for ▁a ▁new ▁appointment . ▁Turner ▁was ▁appointed ▁as ▁his ▁replacement . ▁He ▁managed ▁Cambridge ▁until ▁January ▁ 1 9 9 0 , ▁stabil ising ▁a ▁club ▁that ▁was ▁at ▁rock ▁bottom ▁and ▁turning ▁them ▁slowly ▁into ▁promotion ▁candidates . ▁He ▁built ▁much ▁of ▁the ▁squad ▁that ▁he ▁would ▁later ▁hand ▁over ▁to ▁John ▁Beck ▁to ▁take ▁the ▁team ▁up ▁from ▁the ▁Four th ▁Division ▁to ▁Second ▁Division . ▁ ▁He ▁took ▁on ▁his ▁next ▁manager ial ▁position ▁at ▁his ▁first ▁club , ▁Peter borough ▁United , ▁in ▁January ▁ 1 9 9 1 ▁and ▁managed ▁the ▁club ▁until ▁December ▁ 1 9 9 2 , ▁going ▁on ▁to ▁be ▁one ▁of ▁the ▁most ▁successful ▁man agers ▁in ▁the ▁club ' s ▁history . ▁He ▁retired ▁from ▁football ▁in ▁ 1 9 9 2 ▁and ▁went ▁on ▁to ▁own ▁the ▁club ▁as ▁chairman ▁before ▁s elling ▁his ▁interest ▁to ▁Barry ▁F ry ▁in ▁ 1 9 9 6 . ▁ ▁In ▁ 2 0 0 6 , ▁Turner ▁te amed ▁up ▁with ▁ex - Peter borough ▁player ▁Lee ▁Power , ▁who ▁was ▁then ▁chairman ▁of ▁Cambridge ▁United , ▁to ▁help ▁out ▁in ▁a ▁temporary ▁co aching ▁role ▁at ▁the ▁club . ▁But ▁soon ▁afterwards ▁he ▁became ▁ill ▁with ▁what ▁was ▁later ▁diagn osed ▁as ▁front al ▁lo be ▁de ment ia , ▁and ▁by ▁April ▁ 2 0 1 4 ▁he ▁was