New York Knicks center Joakim Noah underwent arthroscopic surgery on his left knee and will be re-evaluated in three to four weeks, the Knicks announced Monday.

According to Adrian Wojnarowski of The Vertical, Noah will miss the rest of the season.

However, Marc Berman of the New York Post reported that it was unknown if Noah would miss the rest of the season.

League sources told Wojnarowski the procedure would be a "clean up" of his left knee. That's the same knee that required arthroscopic surgery in 2014, though Ramona Shelburne of ESPN reported this latest procedure is for a recent injury.

Noah, 32, has averaged 5.0 points and 8.8 rebounds in 22.1 minutes per game this season in 46 appearances.

Noah's season has been defined in large part by various injuries, as he's also dealt with shoulder and hamstring issues. His production, in turn, has slipped, as he's scoring the second-fewest points per game of his career.

That's been a major disappointment for the Knicks after they signed him to a four-year, $72 million contract this offseason, a contract that Sam Vecenie of Sporting News suspects will haunt the team: 

Indeed, the decision to add Derrick Rose and Noah this offseason in an effort to build a veteran core around Carmelo Anthony with a postseason berth in mind—rather than rebuilding around young star Kristaps Porzingis—continues to look worse. The Knicks are currently 24-35 and four games behind the Detroit Pistons for the final playoff spot in the Eastern Conference.

With Noah sidelined, Willy Hernangomez and Kyle O'Quinn will continue to split time at center. It may also give the team the chance to experiment with Porzingis, as Chris Mannix of The Vertical noted:

Given the way the 2016-17 season has gone for the Knicks, they have little to lose by trying something new.