Does CU have 50 donors who can pony up $1 mil each?
I'd be shocked if we don't. At 5,000 alums per year for the last 50 years, that's a pool of 250,000 college-educated people over a full adult age range. You just need the .9998 percentile to have enough money to donate $1 million. And that doesn't even include sidewalk fans who never went to CU, grad school alums, or people who attended but never graduated.
That said, knowing how investment funds usually work, it's more likely that if this happens it will be a $50 million fund with varying levels of donation above a certain minimum.