Jordan Spence has joined Championship side Sheffield Wednesday on emergency loan until 28 September.
The former England Under-21 defender is expected to make his debut for the Owls at Middlesbrough this afternoon.
Spence, 23, has previously enjoyed loan spells at Leyton Orient, Scunthorpe United and Bristol City.
The Woodford-born player made his West Ham United debut in May 2010, when he appeared as a late substitute in the final-day draw with Manchester City at the Boleyn Ground.
Spence has totalled ten first-team appearances for the Hammers, but has not played for Sam Allardyce's side since the FA Cup third-round replay at Manchester United in January.