377. Tenant's right to assign.

In the absence of provision to the contrary, a tenant for years or a tenant from year to year or other term has the right to assign his term or tenancy, or to create underleases or subtenancies1. A restraint on assignment or underletting is, however, valid, and may be created either by condition or by covenant. If it is created by a condition, the condition will express the lease to be void upon those events2, but it will be construed as making the lease subject to re-entry at the election of the landlord3. More usually, the restraint will be