The team announced the moves Friday.
Cotton signed his second consecutive 10-day contract with the team. The 6-foot-1 guard scored three points, grabbed two rebounds, had one assist and one steal in his lone appearance against the Denver Nuggets on Feb. 27.
Benimon was called up from the Jazz's developmental team, the Idaho Stampede. He played in 35 games with Idaho this season, averaging 19.9 points, 10.6 rebounds, 4.3 assists and 1.0 steals.
The Jazz now have 15 players on their roster.