The team can talk to Westbrook starting July 1 about a five-year contract extension.
The team, ousted by Houston in the first round of the NBA playoffs, can talk to Westbrook starting July 1 about a five-year contract extension, hoping to avoid his potential departure after next season.
"When that time comes, we'll sit down, we'll have conversations with him about what that opportunity presents," Presti said.
"We're obviously hopeful that he remains really excited about being a part of this organization for the remainder of his career."
Westbrook, who this year became the first player since Oscar Robertson in 1961-62 to average a triple-double for a full season, could play one more season and opt out of his contract, making him available to the highest bidder next year.
After losing free agent Kevin Durant to the Golden State Warriors last July, the last thing the Thunder want to have happen is Westbrook leaving, so they seek a new deal after seeing him make history and in the wake of Durant's departure.
"We had that conversation with Russell last year. He was really clear and it worked itself out," Presti said.
"So before we get all the way down the road on what if... we're talking about a very complex question, a very complex situation with a lot of moving parts, and looking for like a simple answer to that. So let's just have the conversation, see where it goes.
"I think everybody knows how we feel about him. He's a transcendent player. I think he's a futuristic player. I think he's a tremendous competitor and we're fortunate to have him. We'll have a conversation and hopefully it goes our way."
Presti, whose team reached the 2012 NBA Finals but lost to Miami, said he was not concerned about a window of opportunity for Westbrook to be the focus the Thunder build around with his 29th birthday coming in November.
"Over the last six or seven especially years, we've had a title team and been playing deep into the playoffs so we've been operating I think with a pretty aggressive mind-set. I don't think that really changes," Presti said. "Being urgent is less important than being accurate."
Presti said that while he wants to surround Westbrook with solid support talent, he is careful not to stifle the all-around playmaker skills that make him perhaps the NBA's most dominant single player today.
"He's a dominant player and we're so fortunate to have him. I just don't think there's many players that can impact the game like that," Presti said.
"Sometimes with Russell, his excellence and his greatness, we look at it as if it's something that he has to do, not something he can do. He's that good."