"It's the best place, best coaches and the best decision," Knell told Scout. "They are high on character and are able to push me to my full potential. They're all about team."
The coaching staff played a big role in Knell's decision.
"He really liked the coaches and believed they could help him reach his full potential," said Kendall Youngblood, who coached Knell with Exum Elite. "With the type of players they will attract he will get open looks.
"Also being the number one public school in the country had a lot to do with it; Trevin is a 4.0 student."
Knell is confident in what kind of role he'll have in Berkeley.
"I think I'll bring a new level of scoring the way I can shoot the ball. It will leave the other players more open because they won't be able to leave me."
The three-star prospect gives the Golden Bears a lights out shooter. He is a shooting specialist with pretty good size for the position.
He's best from beyond the arc, where his smooth stroke and quick release helps him hit three-pointers at a high level. Knell will hit three-pointers off the catch or pump fake, take a dribble and hit them off one bounce.
Knell can also hit one or two dribble pull-up long midrange jumpers, but it's an area he'll need to keep getting better at. He needs to keep advancing his ball skills and midrange game, but there's a lot of value to Knell as a shooter.
Per Draft Express, Knell shot 49.5% from three and 50% from two this summer with Exum Elite, averaging 16.5 points with an impressive 26.3 PER in the process.