Owner Carry/Current tenant question

[Stoni Beauchamp]

Not sure if this is the correct place to ask or not, but maybe someone can answer a quick question.

I am selling one of my cheaper properties to a new investor using an owner carry agreement.  I have a good base contract, and the buyer and I are in agreement on most of the terms, but I'm struggling on how to deal with the current tenant lease.

The current tenant is on a month to month lease.  Because ownership of the property doesn't technically get signed over to the buyer until the contract is fulfilled (paid off), what is the best course of action moving forward?

Option 1:  Put language in the contract that the buyer has rights to lease the property out, then have the buyer negotiate his own agreement?

Option 2:  Put language in the contract assigning all current leases to the buyer, then step away and let them handle it?  I'm not entirely sure this would jive with the current lease.  

Option 3:  ???

Any input is appreciated.