After several weeks of workouts, Timberwolves guard Brandon Roy wants to ease concerns about his knees.

Roy, who announced his retirement in December because of a degenerative condition in his knees, says he is satisfied with his progress and is “not holding back” in preparation for the 2012-13 season.

“I’ve had no setbacks,” the three-time NBA all-star told reporters Thursday, Sept. 13, after an informal practice with teammates and several former college players. “There’s nothing stopping me from getting back to my old game. It just takes work and getting my rhythm back.”

Roy, 27, has been in Minnesota for two weeks working out with Timberwolves player development coach Shawn Respert and a handful of Wolves players, including Nikola Pekovic, Malcolm Lee and Chase Budinger. Also working out was former Wolves player Anthony Tolliver, who remains unsigned after becoming a free agent after last season.

Roy, signed by the Timberwolves as a free agent July 31 after sitting out all of last season, conceded the coaching staff has tried to “hold me back.” Roy, who averaged 19.0 points per game in five seasons with the Portland Trail Blazers, is determined to prove he still can play. He has had six surgeries on his knees, but he underwent platelet-rich plasma therapy in 2011 and believes that will resurrect his career.

“I want to come in and make an impact right away,” Roy said. “I want to be ready to deliver. A lot of people think I’m going to be limited. I tell them, ‘Go ahead and think that way.’ I’m not cautious about anything. I’m confident everything will go well.”

A key test for Roy will be his durability in Timberwolves training camp, which starts Oct. 2. Respert has done most of the work with Roy and is impressed with his progress.

“He’s getting better and better, and that’s the sign we’re looking for,” Respert said. “He hadn’t played a lot of high-level five-on-five stuff before he got here, but you can tell he’s done enough. We saw it today, that after he finds his rhythm and gets his second wind, he really gets back to some of those short stints you saw him do throughout his career.”

Pekovic healthy, leaner

Pekovic, looking lean and trim after losing “seven or eight pounds,” said he has had no complications after undergoing surgery May 15 to remove bone spurs in his right ankle.

“I feel great,” the Wolves center said after Thursday’s informal workouts. “My ankle is much better. I don’t feel anything. I hope it can stay like this all the time.”

Pekovic said part of his offseason conditioning after the surgery was to lose weight. He is down to about 235 pounds after finishing last season listed at 243. Pekovic said he worked with a nutritionist in the summer who helped him slim down and change his diet.

“I just wanted to come in as lean as I can to help my game and bring down my body fat,” he said.

Pekovic started 35 games last season before the bone spurs limited his play in the final month. He still had an impressive season, averaging 13.0 points, 7.4 rebounds and shooting a team-high 56.4 percent from the floor.

Briefly

The Wolves have yet to make an announcement but are expected to sign free-agent point guard Will Conroy, 29, to a partially guaranteed contract. Conroy was in the Wolves’ camp last year but failed to make the final roster. He was a high school and college teammate of Roy; they grew up in Seattle. … Robbie Hummel, the Wolves’ second-round pick in the 2012 draft, suffered a torn meniscus in his right knee during training camp with Obradoiro, a pro team he signed with in Spain. He flew to New York on Wednesday to undergo surgery. Hummel, who suffered two knee injuries at Purdue, is expected to miss four to six weeks. … A report on Yahoo Sports said the Wolves are expected to hire Dave Benz of Comcast Sports Bay Area as their new play-by-play TV voice. Benz will replace Tom Hanneman, who moved over to Fox Sports North full time. … Respert, the Wolves’ player development coach, will be inducted into the Michigan State basketball hall of fame on Sept. 20.

Follow Ray Richardson at Twitter.com/twolvesnow.