The 27-year-old centre-forward joins the club on a season long loan, becoming Nuno Espirito Santo’s first new signing of the summer.
Jimenez has won 62 caps for his country, scoring 14 goals, and is part of the Mexico squad travelling to Russia for the 2018 FIFA World Cup.
Jimenez began his career for Club América, helping his boyhood side clinch two Liga MX titles, before securing a move to Europe and Atlético Madrid.
After a season and 21 appearances in Spain, the six-foot-two-inch striker moved to Benfica where he helped fire the Lisbon outfit to back-to-back Primeira Liga titles.
In 120 appearances for Benfica he scored 31 goals and created 15, and averaged a goal or assist every 75 minutes in last season’s title winning campaign.
Jimenez also has 22 Champions League appearances to his name, as well as Portuguese Cup, Portuguese League Cup and Portuguese Super Cup winners medals.
The combative frontman also won gold whilst representing his country at the London 2012 Olympics, and will take the number 9 jersey into this summer’s World Cup, where he is expected to play a part in group stage fixtures against Germany, South Korea and Sweden.