Evans was the team's third restricted free agent who received a one-year qualifying offer, joining forward Vladimir Radmanovic and guard Ron Murray. They all can become unrestricted free agents after this season. Terms were not disclosed.
Evans averaged a career-high 9.3 rebounds and 4.9 points last season, his third in the NBA. In 221 games with Seattle, the 6-8 Evans has averaged 3.7 points and 7.2 rebounds, providing strong interior play for a perimeter-based team.
"We're thrilled to have one of the top rebounders in the NBA back in a Sonics uniform this season," Sonics general manager Rick Sund said. "Reggie is a tenacious rebounder and he has always found a way to have an impact on the court. He's like a bulldog around the boards."
The Sonics also waived rookie swingman Omar Thomas.