James Tomkins is back at West Ham after his loan spell at Championship side Derby came to an end.
The defender has spent the last month at Pride Park, making eight appearances for the Rams.
He had impressed at the heart of Derby's defence and had hoped to extend his stay at the club, but has been forced to return to Upton Park.
Hammers boss Gianfranco Zola is keen to have as many bodies on board as possible heading into the New Year as he looks to maintain the club's top-flight status.
"It's disappointing to lose James as he has done well for us since he's been here, but it goes without saying we fully respect West Ham's decision to recall him and thank Gianfranco Zola for allowing him to come to Derby in the first place," Rams' caretaker manager Chris Hutchings told the club's official website.
"He is a terrific lad and we all wish him well for the future and thank him for his contribution."