FA: Kemba Walker to DAL | his knee is "not good"

[Dahlsim]

Sounds to me like the Mavs fully understand the Kemba dice roll is all about how long his knee holds up. 
Mavericks GM Gives Worrisome Update On Kemba Walker's Health (msn.com)

explaining how Kemba's knee is looking right now and what it means for the team's aspirations.

“It’s not good,” Harrison said, via Mavs Money Ball. “It’s not good at all. But he’s rehabbed it and it’s the best he’s felt in the last two years so, we’ll see how long that lasts.”

However, he said that the team is aware that this has been common for Walker, and even though his body has bothered him in the past, Kemba has played through injuries and had very good matches.

“Well, it hasn’t been good for a few years,” Harrison clarified. “Even last year, he had 30-point games on it. But it actually feels better now. The reality is, if you look at it, it’s not good, but that doesn’t mean he can’t play on it.”

This could be a problem for the Mavericks but also a good thing if he can maintain a good level in Dallas.