West Ham co-owner David Sullivan has revealed that they have reached an agreement with Barcelona to sign the midfielder on a permanent basis.
Song is currently recovering following an ankle surgery earlier this summer and the move would be dependent on if he can prove his fitness.
“We have a deal in place with Alex Song subject to a medical,” Sullivan told the KUMB podacast.
“He’s injured at the moment, which is something you’ve got to weigh up. But we’ve got until September 1st to make a decision.
“He’s a player we all admire and we just hope that the medical shows he’s in a sufficient state for us to gamble.
“He couldn’t physically pass a medical tomorrow, but if the medics say it’s just a technical thing and he’s only a couple of weeks away you’d take that gamble and hope they’re right.
“He’s still got two years left on his Barcelona contract and you’re signing a player on a three-year contract, so it’s a huge commitment.”