Noel, who is represented by Rich Paul and Lucas Newton of Klutch Sports, has jumped around the league since being taken sixth overall by the Sixers in the 2013 NBA draft. He was traded midway through his third season in Philadelphia, spent 1½ seasons with the Mavericks, and then signed a free-agent deal with the Thunder in July 2018.
The 26-year-old appeared in 61 games (seven starts) for OKC in the shortened 2019-20 season, averaging 7.4 points and 4.9 rebounds in 18.5 minutes.
He remains one of the game's better shot-blockers; his 2.9 swats per 36 minutes this past season ranked sixth in the league.
Payton, who is represented by Aaron Mintz and Ty Sullivan of CAA, returns to the Knicks after averaging 10.0 points and 7.2 assists per game for them last season.
A six-year veteran, Payton, 26, began his career with the Orlando Magic, who made him the 10th overall pick of the 2014 draft.