A move is still a possibility, however, with the midfielder training alone as the Catalan giants seek to sell him.
It had been thought that he would complete a permanent move this summer, with negotiations having been ongoing for some time - but a deal is yet to be struck.
With the transfer window set to close on Tuesday, the Hammers are certainly leaving it late should they be interested in bringing him back permanently, with comments from the club certainly suggesting that is still in their thoughts.
However, one potential problem holding up the deal could be his current fitness status, with the Daily Mail reporting that he has a piece of floating bone in his knee which may require surgery and leave him absent for three months.
If that is the case, perhaps Slaven Bilic’s side are leaving it as late as possible to make sure of his long term fitness before agreeing to a deal.