Downing has two years remaining of his current contract but he has reiterated his stance of not wanting to commit to longer at this juncture.
He said: "My agent had a meeting with the club - just one meeting - and he just felt it was the right time not to sign my contract.
"I've still got two years to go, so I've still got a long time to go, so I just decided to leave it as it is.
"Will I be at Villa next season? I'm not sure.
"I mean, we had the meeting with the club, we expressed our feelings and they said to me they're going to improve the team and the squad.
"So, as far as I know, I'll still be reporting back for pre-season because I've heard nothing."