New York ? Randy Johnson finally appears headed to New York.

The Arizona Diamondbacks and Yankees reached a tentative agreement Thursday on a deal to send the Big Unit to the Bronx for pitchers Javier Vazquez and Brad Halsey, young catcher Dioner Navarro and $9 million, a baseball official said on condition of anonymity.

The agreement must be put in writing, a process that was about 90 percent complete Thursday night but will not be finished until today at the earliest and perhaps not until Monday, the official said. While not confirming the substance of the report, Diamondbacks managing partner Ken Kendrick confirmed that the teams “are in serious discussions.”

Kendrick also indicated Arizona was working on another deal involving Vazquez. One possible suitor was the Los Angeles Dodgers, who could send outfielder Shawn Green and pitcher Brad Penny to Arizona.

The separate trades would, in essence, reach the same conclusion as the three-team effort that fell apart last week when the Dodgers backed out.

“We would not agree to a final deal or a trade of Randy Johnson unless we believed it would benefit our team,” Kendrick said. “That would require in return at least two significant major league ballplayers.”

Kendrick said, however, that no deal could be completed, or the paperwork even submitted to the commissioner’s office, until early next week.

In addition, the Yankees reached a preliminary agreement on a contract with Tino Martinez that would bring the free-agent first baseman back to New York. The one-year deal with Martinez, who was at New York’s minor-league complex Thursday in Tampa, Fla., would guarantee him about $2.7 million and include a club option for 2006.

Because the money was greater than $1 million, commissioner Bud Selig must give his approval, which likely won’t happen until next week.