▁it ▁appeared ▁that ▁D unn ▁rejected ▁a ▁new ▁contract ▁from ▁the ▁club , ▁confirm ing ▁his ▁departure . ▁ ▁Cambridge ▁United ▁D unn ▁agreed ▁a ▁ 2 - year ▁deal ▁to ▁join ▁Cambridge ▁United ▁on ▁ 1 0 ▁June ▁ 2 0 1 4 ▁for ▁the ▁U ' s ▁return ▁season ▁in ▁the ▁Football ▁League . ▁Upon ▁joining ▁the ▁club , ▁D unn ▁was ▁given ▁a ▁number ▁one ▁sh irt ▁ahead ▁of ▁a ▁new ▁season . ▁ ▁D unn ▁made ▁his ▁Cambridge ▁United ▁debut , ▁in ▁the ▁opening ▁game ▁of ▁the ▁season , ▁where ▁he ▁kept ▁a ▁clean ▁and ▁played ▁the ▁whole ▁game , ▁in ▁a ▁ 1 – 0 ▁win ▁over ▁P ly mouth ▁Arg yle . ▁After ▁ear ning ▁one ▁point ▁in ▁the ▁next ▁two ▁matches , ▁D unn ▁was ▁able ▁to ▁keep ▁another ▁clean ▁sheet , ▁in ▁a ▁ 5 – 0 ▁win ▁over ▁Carl is le ▁United ▁on ▁ 3 0 ▁August ▁ 2 0 1 4 . ▁On ▁ 2 3 ▁January ▁ 2 0 1 5 , ▁D unn ▁played ▁a ▁vital ▁role ▁in ▁the ▁clubs ▁shock ▁FA ▁Cup ▁ 4 th ▁Round ▁ 0 – 0 ▁Draw ▁with ▁Manchester ▁United , ▁forcing ▁a ▁re play ▁with ▁the ▁Prem iers hip ▁side . ▁Manchester ▁United ▁won ▁ 3 – 0 ▁in ▁the ▁re play ▁at ▁Old ▁Tra ff ord ▁on ▁ 3 ▁February ▁ 2 0 1 5 . ▁D unn ▁was ▁the ▁first - choice ▁goal keeper ▁at ▁the ▁Ab bey ▁Stadium ▁for ▁the ▁ 2