New Landlord: how to remove one of the tenants of the lease

[Sarah Nguyen]

I am new to the landlord business.  I just bought a property & inherited 3  tenants in one unit.  One roommate wants to move out & be off the lease.  The lease is valid until 31 Dec 17.  2 other roommates have no issue with the removal but they may find a new roommate.  Please let me know what I need to do or what forms I need to use in this case.  I am living in Oklahoma.  Thank you.