Rubuta ci gaba don wannan sakin layi - Mas ya sami kiransa na farko ga tawagar 'yan wasan Argentina a watan Agusta 2015 ta Tata Martino a matsayin mai maye gurbin rauni ga Pablo Zabaleta. Ya fara buga wasan sa na kasa da kasa a ranar 4 ga Satumba, 2015, yana farawa ne a wasan sada zumunta da suka yi da Bolivia a filin wasa na BBVA, Houston. Ya kuma bayyana a matsayin mai maye gurbin a wasan da ya biyo baya, wasan 2<unk>2 da Mexico. Wata daya bayan haka, an sake kiran Mas zuwa tawagar a lokacin taga na gaba kuma ya fara wasannin biyu yayin da Argentina ta fara gasar cin kofin duniya ta FIFA ta 2018 tare da shan kashi 2-0 ga Ecuador da kuma cin kwallo ba tare da ci ba tare da Paraguay. Ya kasance mai maye gurbin da ba a yi amfani da shi ba a lokacin wasan na gaba na cancanta a watan Nuwamba na 2015 kafin a bar shi daga cikin tawagar a watan Maris na 2016. Ba a kira shi zuwa ga tawagar Copa América 2016 ba
amma an tuna shi a watan Satumba, yana farawa a gasar cin kofin duniya da ta yi nasara a kan Uruguay. Ya buga wasanni uku, duk a matsayin farkon hagu, kafin a bar shi a wasanni huɗu na ƙarshe yayin da Argentina ta tsallake tsallake-tsallake a matsayi na ƙarshe na atomatik. Duk da cewa Martino ya kare zaɓen Mas da aka maimaita a matsayin damar duba 'yan wasan da ke cikin takaddama don a kai su gasar cin kofin duniya, daga ƙarshe an bar shi daga cikin' yan wasan kuma ba a kira shi ba tun daga lokacin.