The Jaguars and the representative for free agent Derek Cox will meet Saturday, but it’s likely the cornerback will hit the open market on March 9 and another team will offer more for Cox’s services. Cox is the most prominent Jaguars unrestricted free agent. Cox’s agent, David Sullivan, said today in a lengthy interview that Cox’s preference is to remain with the Jaguars, where he has spent all four years of his NFL career. But at a fair price. The Jaguars will not be using the franchise tag worth $10.668 million on Cox to make sure he remains with the team, a decision Sullivan wasn’t surprised with. If Cox was tagged and signed the tender, his 2013 salary would have been guaranteed but the sides would have had until mid-July to reach a long-term contract agreement and rip up the tag deal. “It’s going to be a vigorous market,” David Sullivan said Friday during a break in the agent meetings at the Indianapolis Convention Center. “I really thought going into this, they would tag him as a way to control the next year as a fallback and corner the market on negotiations with him and avoid the open market,” Sullivan said.