Chelsea boss Jose Mourinho is set to announce the deal for Atletico Madrid striker Diego Costa, according to the TuttoMercato website.
The Spaniard is being brought in to add more fire-power to the squad, as many feel that is what cost them the chance of silverware last season.
And the Portuguese boss is hoping a deal can be announced soon.
The Blues finished third in the Premier League last season, just four points behind winners Manchester City, despite Mourinho repeatedly claiming they were not title challengers.
It is hoped the signings of Costa, for £32million, will help them win their first league title since the 2009-10 season.