West Ham have reportedly launched an ambitious bid to sign Chelsea striker Salomon Kalou, who has also been linked with Arsenal and Liverpool.
The Ivory Coast international, who is currently away on international duty at the African Cup of Nations, is out of contract at the end of the season and has been linked with a number of clubs over the past few months.
The 26-year-old has fallen out of favour at Chelsea this season under Andre Villas-Boas and is now behind the likes of Fernando Torres, Didier Drogba and Daniel Sturridge in the pecking order at Stamford Bridge.
According to the Daily Mail, West Ham are lining up a loan bid for the forward after manager Sam Allardyce cooled his interest in Nikica Jelavic.
Rangers recently rejected a £6million bid from the Hammers for the striker.
Everton, Paris Saint-Germain, Tottenham and Russian duo Anzhi Makhachkala and Lokomotiv Moscow have also been linked with Kalou, who could still choose to leave Chelsea on a free transfer at the end of the season.