Purchaser may not assign its interest under this Agreement to any person or entity without the prior written consent of Seller, except that Purchaser shall have the right to assign its rights and obligations under this Agreement to a corporation, limited liability company, general partnership, limited partnership, or any similar entity if the legal and beneficial interest in such entity is wholly owned by the Purchaser or the current owners of Purchaser or controlled by principals of Purchaser.  In the event of any permitted assignment, the assignee shall assume all obligations of Purchaser hereunder and Purchaser shall remain liable as a principal and not as a surety.