A friend of the 37-year-old previously told In Touch Weekly that Hayes had been approached to appear as a Dancing with the Stars' sixth-season celebrity participant.
"He's probably going to do it," the friend told In Touch. "Sean can bust a move with the best of them."
Hayes received a 2000 Emmy award for Outstanding Supporting Actor in a Comedy Series thanks to his Jack McFarland character on Will & Grace, which ran on NBC from Fall 1998 to Spring 2006. Hayes most recently co-starred in The Bucket List with Jack Nicholson and Morgan Freeman.
Dancing with the Stars 6 will debut with a 90-minute performance episode broadcast on Monday, March 17 in its regular Mondays at 8PM ET/PT time period. ABC will then air Dancing with the Stars' first sixth-season results show broadcast on March 25 in its regular Tuesdays at 9PM ET/PT time slot.
Dancing with the Stars' sixth-season cast will be revealed during ABC's live two-hour finale broadcast of Dance War: Bruno vs. Carrie Ann on Monday, February 18 at 8PM ET/PT.