How much mileage would Miami get in deal for expensive Carr? Fan Web sites continue to churn the idea of Houston QB David Carr being traded to the Dolphins in exchange for a package of RB Ricky Williams and either a first-, second- or third-round pick. While there is some logic to the idea — the Texans could then take Houston native and Texas star QB Vince Young with the No. 1 overall pick — there's one really big problem. Do the Dolphins want to pay $24.5 million over the next three years for Carr? That's the basic price. The breakdown is this: There are two options in Carr's contract. The first is that the Texans can pay him a $5.5 million bonus on Feb. 19 and then pay him base salaries of $5 million this year and $5.25 million in 2007. That's $15.75 million for two years. The second is that Carr gets an $8 million bonus on Feb. 19 and base salaries of $5.25 million this year, $5.25 million in 2007 and $6 million in 2008. That's $24.5 million for three years. Neither price is appetizing for a guy who has a lot of potential but not much in results during his first four years. The Texans could also not pick up the option and simply designate Carr as the team's franchise player. But that move only decreases his value because it means that a team acquiring Carr would have him on only a one-year deal. In short, as one NFL executive said recently: ''The contract isn't tradable.''