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The price of Green

The Miami Dolphins will have to give the Kansas City Chiefs a fourth-round pick instead of a fifth-rounder as compensation for quarterback Trent Green if Green plays at least 70 percent of the offensive plays next season, an NFL source said Thursday.

That condition was part of the deal the Dolphins agreed to in consummating the trade Tuesday. Green was introduced to the Miami media Wednesday after passing a physical with the team. He is expected to sign a three-year contract with the Dolphins later today or on Friday after agreeing to restructure his contract.

Green was scheduled to make $8.2 million from Kansas City this season but agreed to take less to go to Miami. Exact terms of the deal were unavailable.

The Dolphins made the deal happen this week after increasing their offer to Kansas City. The Dolphins originally had offered a sixth-round pick for Green, then upped the offer so that the sixth-rounder could improve to a fifth. Finally, the Dolphins relented and agreed to the conditional fifth in order to get Green on the team in time to participate in a three-day minicamp this weekend.

Green has suffered two serious injuries in his career but has also taken the field consistently for a number of years. Last season, Green was limited to eight games in the regular season because of a concussion suffered in the opener. In 1999, he missed the entire season with St. Louis because of a knee injury.

But from 2001 to 2005, Green did not miss a game because of injury, starting 80 regular-season games with the Chiefs.

The Dolphins are expected to release former starting quarterback Daunte Culpepper, who said he would not agree to a trade. Green, who will be 37 this season, is expected to be the starter ahead of veteran backup Cleo Lemon and second-round pick John Beck.