Tony Gonzalez promises that he will retire from the NFL after the 2013 season.

Gonzalez returned to the Atlanta Falcons this offseason after being 95 percent sure he would retire when the 2012 season began.

"When I went home, I was able to talk to my family and my close circle -- specifically, my son Nico -- he was the reason I was going to retire, anyway. He lives out in LA with his mom, he doesn't live with me during the season, so I wanted to spend more time with him," Gonzalez said. "[Nico] said, 'You know what, Dad, you guys have a great team. I think you should go out and try it one more time.' And after he said that, with everything that fell into place, with the type of team we're going to have ... it was kind of a no-brainer."