Texans general manager Charley Casserly has indicated a willingness to trade the No. 1 overall pick in the April 29 NFL draft. Now the question is which team, if any, will take the bait. The Jets? A person with knowledge of a potential draft-day deal said last night that the Texans might be interested in the Jets' No. 4 overall pick if the right package were presented. Such a trade almost certainly would include defensive end John Abraham. If it were made, the Jets would be interested in drafting quarterback Matt Leinart, the 2004 Heisman Trophy winner who led USC to back-to-back national titles. "The Giants traded up from No. 4 to No. 1 to get Eli Manning," the person said. "So why not the Jets? This could be their chance to make the same kind of splash as the Giants. Leinart has that star quality that would play well in New York." Neither Jets general manager Mike Tannenbaum nor coach Eric Mangini has tipped his hand about draft-day intentions. But a person familiar with the Jets' thinking last night shot down any proposed deal, saying, "There's nothing to it."