He joined Villa in January as part of a deal that included a £40m option to make the move permanent.
Rashford took to social media to thank the club and its supporters for their warm welcome.
He praised the team's manager, coaching staff, and the fans for making him feel at home from the start.
Rashford acknowledged that the team's failure to secure a Champions League spot was a disappointment, but he is confident that Villa will bounce back stronger in the future.