At 27 years old, Rashford spent the second half of last season on loan at Aston Villa due to a disagreement with the team's new manager, Ruben Amorim.
He was left out of the team for a crucial Premier League match against Manchester City, and later expressed his desire for a new challenge in his career.
Manchester United has since given his number 10 jersey to new signing Matheus Cunha, indicating the club's intention to let him go as soon as possible.
According to reports, Rashford has returned to training despite being granted permission to explore other options for his future.
However, he will not be participating in team training and will focus on improving his fitness on his own for the time being.
This is not the only uncertainty surrounding Manchester United, as several other players, including Antony, Alejandro Garnacho, Jadon Sancho, and Tyrell Malacia, have also requested to leave the club and are considering their options.