Nurkic, who turns 28 in August, has been limited to just 101 games over the past three seasons due to wrist and ankle injuries. Last season in 56 games he averaged 15 points and 11.1 rebounds per game.
He was acquired by the Blazers from the Nuggets in a trade during the 2016-17 season.
The Trail Blazers have had a busy off-season as they transition a new core of players in following the trade of star guard CJ McCollum last season. The team has acquired Jerami Grant in a trade with the Pistons, agreed to sign Anfernee Simons to a new four-year, $100-million contract and plan to add free agent Gary Payton II on a three-year, $28-million deal.