The 24-year-old has scored 91 times and registered 57 assists in 282 appearances for the Red Devils since making his first-team debut in 2015.
The attacker missed the start of the 2021-22 campaign with a shoulder injury but has recovered to make 11 appearances this term, scoring three times and contributing one assist in the process.
Rashford's current deal at Old Trafford is due to expire in June 2023, though, and according to El Nacional, Man United are open to the idea of selling him.
The report claims that Barcelona are interested in the England international, with the Catalan club's president Joan Laporta identifying him as an ideal signing to help rebuild the team.
However, Man United would allegedly demand an offer in excess of €70m (£60m) for their academy product.
Having been rested against Young Boys in the Champions League on Wednesday, Rashford is expected to be back in the starting XI for Saturday's Premier League clash with Norwich City. body check tags ::