Fer is close to overcoming a knee injury that has kept him out since February, while Yun Suk-young is also available having recovered from concussion.
Richard Dunne is fit again after returning from a knee injury but Rio Ferdinand (knock), Eduardo Vargas and Alejandro Faurlin (both knee) remain sidelined.
West Ham will be unable to welcome back any of their injured players for Saturday’s trip to relegation-threatened QPR.
Sam Allardyce’s Hammers have won just once in their last 12 games and are still without James Tomkins (shoulder), Andy Carroll (knee) and Diafra Sakho (thigh).
Meanwhile, a calf injury picked up by full-back Guy Demel has also left Allardyce short of options in defence.