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Ryan also did not rule out looking to sign a free agent. The Jets released defensive lineman Marcus Dixon on Monday, and Ryan said the move was made in part so the team could pursue other players. Rookie wide receiver Stephen Hill has a hamstring injury that could sideline him a week, so the Jets might need help at that position, too.

Seven of the Jets’ current players have had ACL operations during their careers. Among them is Cromartie, who missed his final year at Florida State with a similar injury before being a first-round pick of San Diego in 2006.

The Jets, despite their mistake-filled win at Miami, are in first place in the AFC East at 2-1, holding the tiebreaker over Buffalo. But tough home games against San Francisco and Houston coming up.

“This is a team game, and as a team, we’ve got to step it up,” Ryan said. “I think we’ll respond. We certainly have to accept the challenge, and we’re going to come out and compete. We might do it a little differently, but we’re certainly going to give it our best shot, without question.

“Is it a major blow when you lose a great player like Darrelle Revis? Of course, it absolutely is. But this is a football team, and I think we showed that yesterday, too.”

While having a talent like Revis in the secondary allowed Ryan and defensive coordinator Mike Pettine to be more creative with defenses, the Jets have no plans to be less aggressive now.

“The most aggressive defense in the history of the National Football League was the Bears back when my Dad was there,” Ryan said. “He played with three college safeties and a college receiver from Yale. That was how his back end was made up.”

The injury further clouds the contract status of Revis, who reported for training camp in July despite saying he was unsure if he would because he was hoping the Jets would rework the $46 million, four-year deal he signed in 2010. He is set to earn $13.5 million during the next two years after the deal — reached after a 36-day holdout in 2010 — was front-loaded with $32.5 million in the first two years.

But after not getting a new deal this offseason, many thought Revis and the team would re-visit the matter after this season. If he doesn’t have a new contract by training camp next summer, he could become a free agent after the 2013 season.

“Yeah, I want to be a Jet for life,” Revis said in July. “If management don’t see fit (to) that, then I have to move on.”