TMZ Sports spoke with a rep for The Spring League who says Kellen and Hardy are 100% committed to play in the 4-team league which will primarily feature NFL vets and "younger talent."
The league is expecting to have reps from all 32 NFL teams at their games and believe it will serve as a showcase for guys trying to get in the league.
We reached out to Manziel for comment. So far, no word back.
As for Kellen, he's pumped to show the world he can still compete at a world-class level.