The Cameroonian midfielder has looked set to leave the Nou Camp for some time, with his two-year spell with the Catalans having been an underwhelming one.
Song shone with Arsenal prior to his 2012 switch, yet he has been far from a regular starter in the blue and red shirt, even though he is able to play at centre-back as well as his preferred anchor-man position.
United and Chelsea have been the two English sides most closely linked with the 26-year-old in recent times, but now it appears that both would have to pay well over the fee originally expected.
It has been suggested for some time that Barca will take a hit on the money they paid the Gunners for Song, with an £8m-£10m valuation having been floating around.
But now it appears that the Spaniards are actually holding out for £20m as they set about rebuilding their first-team squad.
This may deter interested parties, with the player’s stock having dipped since his switch to Spain.