The 27-year-old will spend the 2025-2026 season with the Turkish club, which also has the option to make the deal permanent at the end of the season.

Alvarez joined West Ham ahead of the 2023-2024 campaign and has made 73 appearances for the Hammers in all competitions, scoring two goals and providing three assists in that time.

The midfielder enjoyed a positive summer with the Mexico national team, winning the player of the tournament award on his way to victory with El Tri at the Gold Cup.

Alvarez scored twice in six games at the tournament, including the winning goal against United States in the final.

The former Ajax player, who will now be coached by Jose Mourinho, is excited to get underway in Turkey.

“First of all, thank you. The interest from both the club and the fans over the past few days has been incredible,” Alvarez said.

“I knew Fenerbahçe was a huge club before coming here, but from the first moment I arrived, I saw that Fenerbahçe is much bigger than I thought.

“I'm very happy to be here. I want to train with my team as soon as possible, meet our fans in our stadium, and play in front of them.

“I've heard a lot of good things about Fenerbahçe fans. I compare them to Mexicans. They're very passionate and give everything for their team. As a Fenerbahçe player, I will show all my quality on the field and give my all.”