The England keeper told Villa's website: "I've still got as contract at Liverpool and until someone does a deal with them I can't do anything.
"It's not a done deal. Villa just paid a loan fee for me until the end of the season and any time from now until then they could make it permanent. It's down to all three parties."
Carson added: "I can't really say where I'd like to be, because I'm still under contract at Liverpool and I don't know what's going to happen there.