West Ham United are battling to get a work permit on appeal for Atletico Madrid striker Raul Jimenez.

Manager Slaven Bilic is bringing in a forward after confirmation that Enner Valencia will be out for 12 weeks with a damaged right fibula.

Co-chairman David Gold took to Twitter to wish the Ecuadorian a speedy recovery from his injury.

Raul Jimenez (left) is closing in on a move to West Ham but must receive a work permit first

The Premier League side are worried the Mexican doesn't quite have the criteria to get one

He said: 'We are 99% sure that Enner Valencia will not require an operation. If this turns out to be the case he could be back in October.dg.

'Enner West Ham fans wish you a speedy recovery. dg.'

West Ham have agreed a deal with Atletico to take Jimenez on loan but fear the Mexico international may not be allowed in under stricter Home Office guidelines.

West Ham also have an interest in Paris St Germain forward Jean-Christophe Bahebeck. The 22-year-old is available on loan and Bilic is exploring several possibilities including Charlie Austin at QPR.

Enner Valencia was ruled out for 12 weeks with a leg injury suffered in the Europa League draw