Joakim Noah, 31, spent the first nine seasons of his career in Chicago. (Maddie Meyer/Getty Images)

By all accounts, Joakim Noah is about to reunite with Derrick Rose and return to his hometown.

Multiple sources told The Washington Post that Noah would almost certainly be joining the New York Knicks after free agency began, with a salary expected to be about $18 million per year. Now, the news is official.

Noah, 31, averaged 4.3 points and 8.8 rebounds per game for the Chicago Bulls in 29 games last season before he had season-ending shoulder surgery in January. Both he and fellow big man Pau Gasol have been expected to leave ever since the season ended as part of Chicago’s roster makeover.

Noah will be reunited with Rose in New York, after the Bulls shipped the NBA’s most valuable player in 2011 to the Knicks last week for Robin Lopez, 2015 first-round pick Jerian Grant and Jose Calderon. Chicago is clearly shifting its focus to rebuilding around a younger roster led by all-star — and Olympian — Jimmy Butler, under Coach Fred Hoiberg.

Once the Knicks traded Lopez, their priorities shifted to landing a big man to play alongside Kristaps Porzingis, last year’s rookie sensation. It appears Noah will be their man.

More NBA free agency:

Complete guide: Every available player, latest rumors, best fits and more

Top 50 NBA free agents: Kevin Durant … then everyone else

Miss out on a big fish in free agency? Here’s what your backup plan should be.

Shopper’s guide to this year’s NBA free agents

Brewer: The Wizards can win in free agency. Here’s how.

Steinberg: Wizards owe it to John Wall to make this the ‘biggest summer’

Lakers need to get a star center in free agency

Knicks don’t have a lot of options but need players for the triangle offense

Three teams that should give Dwight Howard a serious look in free agency

Kevin Durant did Wizards a favor. Now they can focus on these free agents.