The Toronto Raptors will be without two more key pieces in Friday’s important NBA Cup matchup.
The Raptors also are missing Kawhi Leonard (knee).
It’s unclear how or when Quickley suffered the injury, but he played 32 minutes in the Raptors’ 128-109 loss to the Denver Nuggets on Wednesday.
In eight games this season, the 27-year-old has averaged 17.4 points, 3.5 rebounds and 5.8 assists in 31.8 minutes a night.
Barnes, meanwhile, has averaged 23.5 points, 7.6 rebounds and 5.1 assists in 33.3 minutes per game.
Forward Kyle Anderson, who was listed as questionable with an illness, and centre Jakob Poeltl, who was probable with a shoulder ailment, are both available against Milwaukee.
The Austrian big man played in Wednesday’s game against Denver but came off the bench for only 18 minutes of action. He missed a back-to-back in Los Angeles against the Lakers and Clippers last week.
Poeltl has struggled this season, averaging 5.2 points, 5.7 rebounds and 0.3 blocks in 20 minutes per game over his six appearances.