West Ham have signed Arsenal goalkeeper Manuel Almunia on an initial one-month emergency loan deal after Robert Green was ruled out for six weeks.
Green faces a spell on the sidelines with a knee cartilage problem and Hammers boss Sam Allardyce has moved quickly to bring in Almunia.
Almunia has found himself out of favour under Arsene Wenger this season and well down the pecking order at the Emirates.
Wojciech Szczesny has established himself as No.1 keeper at Arsenal, while Wenger allowed Almunia to discuss a possible move away from the club in the summer.
A move failed to materialise during the transfer window and Almunia has yet to feature for Arsenal this season.
Almunia could go straight into the West Ham side to face Crystal Palace this weekend and Allardyce thanked Arsene Wenger for sanctioning the loan switch.
"We've been hot on the phone and secured an excellent signing in the short-term in Manuel Almunia from Arsenal," Allardyce told the club's official website.
"It's a big 'Thank you' again to Arsene Wenger and Arsenal for allowing us to get such a high-class and experienced goalkeeper to come in and fill in for Robert for the time being.
"I think he hasn't had as many games at Arsenal as he would have liked so he wants to play first-team football at the end of the day.
"We hope that huge amount of experience he has had at Arsenal and the football he has played on a regular basis will stand us in good stead here at West Ham and more and more clean sheets will come from his presence in goal. That will obviously help us to secure more victories while Robert is out."