Vaughan is out of contract at Blackpool and is expected to leave the club following their relegation from the Premier League.
The 28-year-old has been offered a new deal with Blackpool.
He said: “I’m not sure what Charlie is going to do next season and it’s down to the club if they decide to accept any bids for him.
“It’s out of his hands and for myself I’m just talking to Blackpool and one or two other clubs.
“Hopefully I will make my decision in a couple of weeks.
“Sunderland is a possibility but I am leaving everything to my agent and once I have some concrete offers I’ll decide where I want to go.
“Obviously players want to play in the Premier League and hopefully that will be the case for me next season.”
