NEW YORK - The Mets and Johan Santana's agent spent another day working on a contract extension, a deal that many in baseball expected to be completed before Friday's deadline.

Team officials met Thursday with Peter Greenberg in Manhattan for the second consecutive day. The sides must reach an agreement by 5 p.m. EST on Friday for New York to complete its blockbuster trade with the Minnesota Twins.

Santana was likely seeking a contract worth more than $120 million over six or seven years, while New York prefers not to go any longer than five years. An agreement was expected, but in the end the Mets might have to bend a bit.

Both sides stayed mum about details of the negotiation. Santana's agent, Peter Greenberg, did not return an e-mail seeking comment.

After an agreement on a contract, players in the trade would have to pass physicals for the swap to be finalized. On Tuesday, the Twins accepted New York's offer of four prospects for Santana: outfielder Carlos Gomez, and right-handers Philip Humber, Kevin Mulvey and Deolis Guerra.

Any new deal for the left-hander was expected to set a record for pitchers, surpassing the $126 million, seven-year contract Barry Zito got from the San Francisco Giants last offseason.