Nyora kupfuurira kweiyi ndima - Musi waMarch 5, 2014, Mitchell akatengeswa kuBuffalo Sabres, pamwe chete nechisarudzo chechipiri chekusarudza muna 2014
uye wechipiri-kutenderera kusarudza muna 2016 (kutengeswa kuMontreal kuna Josh Gorges), mukutsinhana naMat Moulson naCody McCormick. Mitchell akapedza mwaka aine zvibodzwa zviviri uye mapoinzi gumi mumitambo makumi matanhatu nenomwe.