The 20-year-old has made 11 first-team appearances for the Red Devils this season although just three of those have come in the Premier League.
Chong has a contract at Old Trafford until the summer of 2022 but has been linked with a move away from the club as he struggles to secure regular action.
According to Bild, Bremen are currently in talks over the possibility of taking the Netherlands Under-21 international on loan for the entirety of next season.
Chong, who also scored five times in six appearances for United's Under-23 team in 2019-20, arrived at Old Trafford from Feyenoord's academy in July 2016.
The attacker was not included in any Premier League squad following the lockdown period, while he also missed out against Norwich City and Chelsea in the FA Cup. body check tags ::