Stamford Bridge club want season-long loan of Upton Park talisman.
Chelsea have made an offer to West Ham United to take midfielder Scott Parker on-loan for the season.
The Blues want the England international to replace Michael Essien, who could miss the campaign with a knee injury.
The Stamford Bridge club hope the Hammers will jump at the chance to trim their wage bill as they attempt to regain their status as as Premier League side.
But West Ham would prefer a permanent transfer because, as well as the fee, the club would not be saddled with the four years he has on his contract, worth about £60,000-a-week in wages.
At 30, his value will not appreciate and boss Sam Allardyce may want to cash in on him now rather than see his price tag drop in 12 months.
Chelsea would be expected to pay a loan fee of about £1.5 million, according to the Times.
A number of clubs have been linked with a move for Parker, notably Tottenham and Arsenal, but have been put off by an £8million valuation.
Aston Villa would pay the money but cannot afford to match his current salary on top but hope he will take a cut.