"I just want to come on the basketball court and just play as hard as possible at all times," Walker said.
"I just want to leave it all on the court, and I guess you could say, walk the talk, instead of the other way around.
"I don't want to talk about my game, I want my game to speak for itself."
Walker, who spent most of the first month of the season on the scout team, said he recognizes he has some fences to mend with his teammates.
"Of course," he said. "I know I have to do that. I have to prove myself to this team and earn their trust.
"But it's something that's worth it. So I'm looking forward to it."