怎樣鋸掉不合理offer

本人簽了一個不合理的 contract offer with my agent. In this Offer 我無權terminate this contract. Agent can terminate this contract any time. 現在還沒有開始工作。client is doing paper work. (client is government).

請問各位怎樣鋸掉 this offer？會有什麽後果？