According to The Athletic's Jon Krawczynski, Butler couldn't put any weight on his leg and had to be carried to the locker room by Karl-Anthony Towns and Cole Aldrich.
Shams Charania of Yahoo Sports reported X-rays on the knee came back negative and an MRI is scheduled for Saturday, adding that the team has some hope that the injury isn't severe.
When MJ Wore #12 After His Jersey Was Stolen Before a Game
15 Years Ago, LeBron, Wade and Melo Took Over All-Star Weekend
14 Years Ago, Iverson Dropped Career-High 60 Points
The Kyrie and LeBron Bromance Is Back!
Bats Have Become an Unexpected Attraction at Spurs Games
KD Giving Back to His Hometown with Durant Center
Four Years Ago, Klay Drops Record 37 Pts in One Quarter
Remembering the Night Kobe Scored 81 Points
Happy 37th Birthday Dwyane Wade
Steph Is a Few Shots Away from NBA 3-Point History
Can Harden Keep His Dominance Going?
Steph Gifts Fan Who Asked for Girls UA Kicks with New Curry 6s
Happy 34th Birthday to LeBron 👑
4 Years Ago, Kobe Passed Jordan on the NBA Scoring List
Drummond and Embiid Reignite Rivalry
Happy 24th Birthday to Giannis Antetokounmpo
D-Rose Turned Back the Clock and Put Up 50
Dubs Trolled Fergie So Hard It Became a Challenge
CP3-Rondo Blowup Was a Long Time Coming
NBA Let Players Know They Have to Cover Branded Tattoos
Butler has been instrumental in leading the Timberwolves to the fourth-best record in the Western Conference. He leads the team with 22.4 points and 1.9 steals and ranks second with five assists per game.
The loss of Butler leaves a significant void in the Timberwolves' backcourt. Jamal Crawford will likely receive a majority of the playing time for head coach Tom Thibodeau.
Towns, Andrew Wiggins and Jeff Teague will have to carry the load for the Timberwolves until Butler is able to return.