Pop singer Aaron Carter will be tying on his dancing shoes this fall as one of the 16 new contenders on "Dancing with the Stars." Now, he talks to ET about his challengers.

"My biggest competition will be [NFL Hall of Famer] Michael Irvin," Carter tells ET. "I know about them football players. They have good footwork. I had been doing this football combine training in Tennessee when I heard about this opportunity, so I started training in endurance and stamina. I was doing the ladders and footwork stuff. I know what it is with those football guys. They got it."

Carter also tells Donny Osmond "to bring it on." He is looking forward to going toe-to-toe with the former teen idol as their careers have taken similar paths.

Another reason Carter is up for the challenge is he loves to learn new things, and right now he is a total newbie to ballroom dancing.

"I love to learn new dances," he says. "I learned Capoeira from some of my dancers before. That is like a martial arts/Brazilian moves."

"Dancing with the Stars" kicks off its new season on Monday, September 21 at 8 p.m. on ABC.