According to a front page story on Bruin Report Online, Darren Collison will miss at least another 10 days.
The story can be found here.
It's a "premium" story which means you need to pay to read the whole article. (Many BN fans are already paying for the fine information found at BRO.)
Even without revealing what's in the story, simple math says Collison won't play in Kansas City next week and will miss the home game against Yale.