In January 2018, La Liga side Villarreal announced the signing of Martínez on loan from Chinese Super League club Jiangsu Suning with a purchase option for the end of the season. In June 2018, Villarreal exercised the option to sign Martínez and immediately sold him to Liga MX side Club América.
In June 2018, Martinez was confirmed by Liga MX side Club América as their newest signing from Villarreal. His debut was on 22 July 2018 against Club Necaxa, scoring his first goal in the 2-1 defeat.