Atlanta Hawks All-Star forward Paul Millsap has opted out of his contract for next season to become a free agent this summer, according to multiple reports.

The Vertical reported on Monday that Millsap, 32, has informed the Hawks he won't exercise his option for 2017-18, and other media outlets quickly confirmed the report.

Millsap's option year was worth $21.47 million.

The 6-foot-8, 246-pounder was Atlanta's leading scorer this season, averaging a career-high 18.1 points and 7.7 rebounds in 69 games and earning his fourth All-Star nod.

He averaged 24.3 points, 9.3 rebounds and 4.3 assists in the Hawks' quarterfinal loss to the Washington Wizards.

Millsap became a free agent in 2015 and signed a three-year deal worth $60.2 million, with a third-year option. He played the past four seasons in Atlanta.

Millsap has career averages of 14.2 points, 7.5 rebounds and 2.3 assists in 11 seasons with the Hawks and Utah Jazz.

He was a second-round selection (47th overall) by Utah in the 2006 NBA Draft out of Louisiana Tech.

Reuters