Seattle Seahawks running back Marshawn Lynch is expected to skip the mandatory team minicamp next week because he wants a contract extension, sources confirmed Wednesday night.

"It's very, very unlikely that Lynch will be there,'' said a source close to the situation. "He wants the Seahawks to renegotiate his current contract and provide him with more up-front money."

Lynch could not be reached for comment Wednesday evening. Thursday is the final day of organized team activities for Seattle, voluntary workouts that Lynch has not attended over the last three weeks.

Lynch, 28, is starting the third year of a four-year deal that is worth $30 million, including $6 million in signing bonus.