According to TechCrunch, Hill said during the Journey to Mars event:

"NASA's trying to develop economic development in low-earth orbit. Ultimately, our desire is to hand the space station over to either a commercial entity or some other commercial capability so that research can continue in low-earth orbit."

The agency did say in the past that it plans to leave LEO in the hands of private space corporations, but it originally envisioned them building their own smaller successor to the ISS. Hill didn't explain things in detail -- he also didn't confirm whether NASA's partner agencies share its desire to leave the ISS to the private sector -- but it's going to be tough renting out the station or selling it for how much it's actually worth. The ISS is an international collaboration between NASA, Roscosmos (Russia), JAXA (Japan), ESA (Europe) and CSA (Canada), and they've all been sinking billions into its yearly maintenance and operations.

Update (08/22/16): A NASA spokesperson issued this statement to clarify its position as one of the several agencies funding and managing the ISS, as we mentioned in our post. Unfortunately, the statement doesn't talk about what the agency and its partners plan to do with the station after 2024.