Tenants want out 1 month early

[Dan Martz]

I'll try to make this short but include all pertinent information:

Tenants want out of their lease 1 month early (lease ends end of June, they want out end of May). They offered 1/2 of security deposit (equal to 1/2 month's rent). I told them I would call them tomorrow to tell them what I'm thinking.

What would you do, would you say "you signed the lease, you're responsible for the whole thing" or "I'll take the full month's security deposit in place as long as the place is in great condition minus normal wear and tear" or "I'll let you out with the caveat that I market it right now and keep the portion of your deposit that covers the unit until it is re-rented, but if it doesn't re-rent for June at all you are still responsible for the remainder"?

Thanks all!