The 34-year-old extended his Old Trafford stay until the summer of 2022 earlier this year but is not expected to remain in Manchester beyond the end of the current campaign.
However, with Cavani enduring a slow start to the new season due to injury and now having to compete with Cristiano Ronaldo for starts up front, there are suggestions that his United career could end before next summer.
According to the Daily Star, Barca intend to dip into the centre-forward market in January amid their attacking injury crisis, and Cavani has been identified as an ideal acquisition.
The report adds that Cavani would only join the Catalan giants on a short-term loan deal, and the Blaugrana would have to fork out a substantial amount of the striker's wages while he plies his trade in La Liga.
Cavani registered 17 goals and six assists from 39 games in all competitions during his debut season with Man United but has only played 47 minutes of Premier League football so far this term. body check tags ::