 Sánchez akadzoka kubva ku2017 Confederations Cup nekukuvara, uye saka aifanira kupotsa kukunda kwechikwata chake pamusoro peChelsea mu2017 FA Community Shielduye chikwata chacho chinotanga nokukunda Leicester City 4:3. Kutanga kwaSánchez kwemwaka kwakauya mukukundwa kwe4-0 kure neLiverpool. Asi mukati mechirongwa chokutamisa, kwaiva nokufungidzira kwakakura pamusoro penguva yake yemberi, nemishumo yakawanda kwazvo yaitaura nezvechishuvo chake chokusiya, kuitira kuti atambe muChampions League. Zuva rekupedzisira rekuenda kuManchester City harina kubudirira sezvo chibvumirano cheArsenal chekutsiva kwaSánchez Thomas Lemar chakarambwa. Akahwina chibodzwa chake chekutanga mumwaka weArsenal 31 UEFA Europa League kukunda divi reGerman Köln, kwaakatora bhora kunze kwenzvimbo yechirango ndokubvarura pfuti yakapfuura muchengeti wepagedhi Timo Horn, kuti awane chibodzwa chechipiri cheArsenal manheru ano. Sánchez akatambawo muArsenal 10 kukunda Doncaster Rovers muLigi Cup, umo Sánchez akapa rubatsiro rwake rwekutanga rwemwaka, nekuendesa muchinjikwa-munda unopfuura uyo Theo Walcott akazoisa pamberi peDoncaster muchengeti wepagedhi, Ian Lawlor. 