The goalkeeper will spend the 2025-2026 season with the Turkish club, subject to international clearance and registration, after losing his place in Ruben Amorim’s squad.

Altay Bayindir has started in all three of United's Premier League matches so far, while they also signed Senne Lammens from Antwerp during the transfer window.

Onana, who has made 102 appearances for the Red Devils, only featured in their penalty shootout defeat to Grimsby Town in the EFL Cup this season.

The 29 year-old kept 18 clean sheets in 72 Premier League matches, while also making four errors leading to goals from the 102 he conceded.

Onana will be aiming to regain his confidence with the Turkish side, which is second in the league after four games (three wins, one draw).

Trabzonspor missed out on a Conference League spot by three points last season, while also reaching the final of the Turkish Cup.