Former Arsenal midfielder Alex Song is set to leave Barcelona for a return to the Premier League this summer, according to Spanish publication AS.The Cameroon international has struggled to establish himself as a regular at the Nou Camp since signing for the club in 2012, and it had been suggested he could go back to Arsenal last summer.googletag.cmd.push(function() { googletag.display(“div-gpt-ad-1389116196215-0”); });However, a move never materialised, and Song stayed at Barca to fight for his place, though his fortunes have not changed this season under new manager Gerardo Martino.Manchester United have also been linked with the 26-year-old, and though it has not yet been revealed which club he will join, a return to England is being mooted as the most likely possibility.Song has made just 15 appearances for the La Liga champions this season, six of which have come as a substitute.