After being under a transfer ban last season, the Blues and owner Roman Abramovich have opened up their chequebook to sign Hakim Ziyech of Ajax and Timo Werner of RB Leipzig for next season for a combined £90m.
Speculation has increased that Chelsea were preparing a bid of £80m+ for the forward.
Lampard, when asked about his qualities during a press conference on Wednesday, was reluctant to talk about a player under contract at another club.
He said: “He’s obviously a top player but to follow on from my answer before I'm certainly not going to comment on other teams, and it cannot be our focus. So, nothing to say.
However, when asked if any negotiations had begun, he replied: “No, no bids have gone in.”