The only reason that this is a story is because it's Under Armor and not Adidas or Reebok. That's what makes it seem like such an outlier of a story. Daniels, among others, has gone on the record and said that it's probably not the case and, given that he's privy to this information and very close to the Harrison family and Turgeon, I'm inclined to agree with him.
Given that the CEO of UnderArmor has a direct line to these two's cell phones I think most reasonable people would be inclined to think that there is a lot more to the shoe aspect of it than Daniels or anyone else is letting on via Twitter. And if the dad is on payroll for UA as RJ says that just makes it even fishier and that the shoe companies are a huge factor.