I te 26 o Mei 2015, i whakapumautia a Ambríz hei kaiwhakahaere hou i Club América, ka hainahia he kirimana e rua tau. I arahina e ia a América ki te mahi pouri i te FIFA Club World Cup, ka ngaro i te whakataetae hauwhā ki te kapa Hainamana a Guangzhou Evergrande, me te patu i te karapu Congolese TP Mazembe ki te kii i te tuarima o nga waahi i te whakataetae. I te tau e whai ake nei, i arahina e Ambríz a América ki te whakamutunga o te CONCACAF Champions League, i hinga i a Tigres UANL 4<unk>1 i runga i te kohinga, na reira i whiwhi i to raatau tohu ki te 2016 FIFA Club World Cup
He aha? I te marama o Hepetema, i tohua ia hei kaiako 10th pai rawa atu e ai ki te "Football Coach World Ranking". I te 17 o Hepetema, i muri i te whiu i te 2-0 i te kainga ki a León, i peia a Ambríz hei kaiwhakahaere i te aonga ake.