Right to first refusal - LSE 17

Right to first refusal is something less than an option.  A right of first refusal to take up a lease.

Sample

"Other than where the Landlord decides to sell the demised premises by Public Auction, throughout the continuance of this Lease and any extension or renewal, the Tenant must have the following right of first refusal to purchase the demised premises namely that if the Landlord desires or proposes to sell the demised premises (other than by Public Auction as afore) the Landlord must make an offer in writing to the Tenant which offer accompanied by a statement in compliance with Section 32 of the Sale of Land Act and a contract of sale must..."