And with the Eagles skipper out of contract, Addicks boss Alan Pardew was quick to snap him on a free transfer.
Pardew said, "Unfortunately for us, Mark was brilliant for Palace last season and I'm absolutely overjoyed with his signing. He's a player I have admired for a long time".
"I think he will be a fantastic player for us, not only on the playing field but off the pitch as well.
"He is a strong character and represents everything that is good about professional football, and I look forward to working with him and seeing him in our team next season."