Donald Trump's Son -- Pumped Bobby Knight's On Team Trump ... 'He's a Winner'

Of all the huge stars supporting Donald Trump (Mike Tyson, Dana White, Tom Brady, etc) ... Donald Trump's son says the coolest person on the team ... is Bobby Knight!

The college basketball legend famously joined Donald at a rally in Indiana back in April -- and Donald's son, Eric Trump, says he's super stoked about it.

"Bobby was a great guy," Eric said ... calling him a "consummate winner" who probably has a lot in common with Donald.
For his part, Knight called Trump "the most prepared man in history" to be president.