Cardiff City manager Lennie Lawrence says he wants to bring Wales international John Robinson to Ninian Park.
Robinson has won 30 caps for Wales
Long-serving midfielder Robinson has been given a free transfer by Charlton after 10 seasons with the club.
The 31-year-old still had a year left on his contract but only featured in 13 Premiership games this season.
Lawrence, preparing for the Second Division play-offs, has long been searching for a quality and experienced player to fill the troublesome right midfield position.
"I'm interested," said Lawrence. "He's a good player. But any possible deal will probably depend on which division we're in next season."
Robinson, who cost the Addicks £75,000 when they bought him from Brighton, told BBC Sport he would seriously consider a move to Ninian Park.
He said: "They are a big club. They are waiting for something to happen.
"Hopefully they can do it in the play-offs and get up because I think (chairman) Sam Hammam can see it as a very big opportunity for him to do what he did at Wimbledon but bigger."
Robinson was Alan Curbishley's first purchase at Charlton and the manager said: "John Robinson has played as much a part in the rise of Charlton in the last 10 years as anybody and I'm sure he will be remembered in the same esteem as Mark Kinsella.
"John has been a fantastic servant and will always be welcome back at The Valley.
"He deserves to leave on a free transfer to make it easier for him to select his next club."