Our sources say Kanye -- who has big deal with Adidas -- was pissed off when he got wind Kyle was negotiating with PUMA and vowed it would never happen because it would be like a family betrayal.
We've learned by the time Kanye got wind of a deal between PUMA and Kyle, the contract was already signed. We're told Kanye was initially angry, but he spoke with Kyle and she explained she got a "carve out," in PUMA agreed to let her wear Adidas in addition to PUMA.
Our sources say Kyle explained to Kanye she got the carve out for him, and at this point couldn't back out or she'd be sued.