Brooklyn Nets forward Blake Griffin says there is a sense of "unfinished business" within the roster ahead of the 2021-22 NBA season.

The star-studded Nets bowed out of the NBA playoffs to eventual champions, the Milwaukee Bucks, in the Eastern Conference semi-finals 4-3.

Brooklyn were not helped by injuries to two, Kyrie Irving and James Harden, of their 'Big Three' down the stretch.

The Nets had been earmarked as title favourites following the acquisition of Harden from the Houston Rockets in January, with six-time NBA All-Star Griffin joining for the Detroit Pistons in March, and the latter said there was unfinished business after falling short.

"We obviously didn’t accomplish what we wanted," Griffin said during a video news conference. "You can say injuries, but every team had injuries.

"We feel like there’s definitely unfinished business. There’s something bigger that we want to achieve, and I still want to be a part of that."

Griffin, who became the first player in free agency to re-sign earlier this week, was confident the Nets can claim the NBA championship.

“Yeah, I think so. I think so," he said. "Obviously there’s a lot of work to do, a lot of work to be done.

"Can’t take anything for granted. But I like our team. I like the guys we have, I like our coaching staff, I like everything we’ve put together. I believe in us."

Star forward Kevin Durant re-committed to the Nets earlier this week on a bumper four-year extension believed to be worth $198million.

Former NBA Rookie of the Year Griffin, who is now 32, added that Durant's extension helped him decide to ink a minimum one-year deal.

"I mean, obviously, it’s comforting to know that the guy of that caliber is locked in," Griffin said. "KD’s kind of like that piece that brought everything together."

Brooklyn have also added guard Patty Mills from the San Antonio Spurs, fresh from leading Australia to a breakthrough bronze medal at Tokyo 2020.

"Patty adds just dynamic shooting," Griffin said. "That’s always a need for us, but also just a veteran point guard who playing against him, it seems like he’s always like that guy that comes up with a big play, - defense, offense, whatever - hits a big shot.

"He’s also a guy that can facilitate and you know, get in the teeth of defense makes the right decisions. Just a really good basketball player."