Diafra Sakho-Enner Valencia
Diafra Sakho and Enner Valencia are reported transfer targets for ChelseaGetty

Chelsea are considering a double swoop in signing West Ham United duo Enner Valencia and Diafra Sakho, according to The Sun.

Sam Allardyce signed the Ecuador international from Mexican club Pachuca, while Sakho was signed from Ligue 1 outfit Metz before the start of the season. The duo have impressed with their display for the Hammers.

Valencia and Sakho have collectively scored 11 goals and managed five assists in the league this season. The Blues manager Jose Mourinho wants to add West Ham's forwards, as the Portuguese tactician is especially pleased with Valencia's performance.

The west London club have the services of Diego Costa, Didier Drogba and Loic Remy as the first choice strikers in the squad. The former Real Madrid manager has used the Brazil-born Spain international for most part of this season to lead his side's attacking division.

The situation has left Remy to spend more time on the bench and Mourinho is believed to use the French international as bait in signing Valencia and Sakho. Remy has seen his first team appearances being limited at Stamford Bridge and has attracted West Ham's attention.

Allardyce is set to let his attacking duo leave Upton Park as West Ham are preparing a move for Swansea City striker Bafetimbi Gomis. The Hammers are the latest club to join Arsenal, Newcastle United and Crystal Palace in signing the Welsh club's hitman.

Gomis is looking for a January exit and a move to West Ham will help Chelsea acquire the services of Valencia and Sakho, while letting Remy move in the opposite direction.

Meanwhile, West Ham manager has rubbished the reports suggesting Chelsea are interested in signing Valencia and Sakho.

"By email, text or phone? How have they sounded us out? The only way it has been sounded out is through the media, certainly not through club to club," Allardyce explained.

"With us having Andy Carroll, Diafra Sakho, Carlton Cole and Enner Valencia we have more than enough front men to cope with the demand for the rest of the season. In the summer we'll reassess our aims and the squad but for now we're fine with the four options we've got."