West Ham have signed Czech Republic midfielder Radoslav Kovac on loan from Spartak Moscow until the end of the season.
The 29-year-old, who was captain at Spartak, can also play in central defence and brings a wealth of experience from his country's World Cup 2006 and Euro 2008 campaigns.
Hammers boss Gianfranco Zola is delighted to have signed a player who is used to Champions League and UEFA Cup level.
"I am pleased to have Radoslav here,'' Zola told the club's official website, www.whufc.com.
"He has a lot of experience with the national team and he will give us competition in a midfield - which is already very strong. I am sure he will help us with what we are trying to achieve this season.''