Jay-Z -- one of Colin Kaepernick's biggest supporters -- is teaming up with the NFL for a music and social justice campaign ... this according to reports.
The partnership is with Hov's Roc Nation company ... in which the rap mogul will be the league's "“live music entertainment strategist" ... including working together on the league's "Inspire Change" activism campaign, according to the New York Times.
Here's where it gets interesting -- just last year, Jay-Z called the NFL out, dissing the league in a song called "APESH*T" .