Kaka has been strongly linked with a move to Real Madrid as well as the Blues but Chelsea, who have just appointed former AC Milan boss Carlo Ancelotti as their new manager, insisted that they have not tabled any offer for the Brazilian.
A statement on the club's official website read: "We have never made an offer to AC Milan for Kaka and therefore not one at this extraordinary level."
The statement continued: "As a consequence we have not discussed a salary with the player either.
"Any reports to the contrary are totally untrue."
A potential move to Manchester City collapsed in January and Kaka has repeatedly insisted that he wants to stay at the San Siro.
On Tuesday night AC Milan denied general manager Adriano Galliani was negotiating his sale to Real Madrid for a quoted fee of ¦pound;56million and Kaka told Gazzetta dello Sport: "I'll say it for the last time. The last time. I don't want to leave Milan.
"In this period I prefer to remain silent because I don't want to be misunderstood. Or, worse still, to be used.
"To the millions of Milan supporters, I say that I have made my choice. I have said what I want to stay. Leave me in peace, please."