New Orleans Saints legend Willie Roaf is clearly disappointed with Alvin Kamara's arrest ... telling TMZ Sports the star running back just "can't do that, man."
The Hall of Famer said outside of a Super Bowl party at Academy in LA on Wednesday that even though the facts might not all be out surrounding the case at the moment, he's still pretty sure Kamara could've handled himself differently in Las Vegas last weekend.
"Whatever the situation was at the elevator -- you can't do that," Roaf said. "You can't do that, man.