Slaven Bilic's side are keen to secure the services of the midfielder, who is also wanted by Burnley, while they may also loan out Reece Oxford
West Ham are hopeful of completing a deal to sign Robert Snodgrass from Hull City, despite rival interest from Burnley, Goal understands.
The Hammers are keen to reinforce their squad this January after a poor start to the season, and have intensified efforts to sign a midfielder after Dimitri Payet demanded to leave the club.
West Ham have resolved to sell Payet in January but have yet to receive what they deem to be an acceptable bid from Marseille, the club that the mercurial playmaker is desperate to join.