Buuxi weedha soo socota: Mariano waxaa si rasmi ah ugu dallacay kooxda ugu weyn tababaraha Zinedine Zidane 20kii Ogosto 2016, ka dib dhaawac dhabarka ah oo soo gaaray weeraryahanka Karim Benzema. Hal usbuuc ka dib, Mariano wuxuu sameeyay kulankiisii ugu horreeyay ee ciyaartoyda da'da weyn intii lagu jiray guushii 2-1 ee Celta de Vigo, isagoo beddelay Álvaro Morata daqiiqadii 77-aad. Bishii Oktoobar 26, mar kale kursiga keydka, wuxuu dhaliyay goolkiisii ugu horreeyay ee "Merengues" si uu u soo gabagabeeyo guushii 7-1 ee Cultural y Deportiva Leonesa ee Copa del Rey. Ciyaartii lugta labaad, wuxuu ku daray hat-trick si uu ugu guuleysto 13<unk>2 wadarta guud, oo ay kujirto gool 23-kii labaad oo ahaa goolka ugu dhaqsaha badan kooxdiisa tartanka. Mariano wuxuu dhaliyay goolkiisii ugu horreeyay ee ugu sarreeya 10kii Diseembar, isagoo u dhigmay guushii soo noqoshada 3-2 ee uu ka gaaray Deportivo de La Coruña. Bishii lasoo dhaafay, wuxuu ka mid noqday kooxdii ku guuleysatay tartanka
2016 FIFA Club World Cup ee Japan, laakiin kuma uusan muuqan mid ka mid ah kulamadii Real Madrid. Mariano wuxuu sameeyay sideed kulan markii Madrid ay ku guuleysatay 2016 <unk> 17 La Liga. Wuxuu ahaa taageere markii Madrid ay ku guuleysatay 2016 <unk> 17 UEFA Champions League.