Jon Horst said that Grayson Allen underwent a "little procedure" on his left ring finger due to an injury that was bothering the 26-year-old during the season.
"A lot of times, guys do maintenance-type stuff, routine stuff in the offseason to kind of get ready," said Horst. "It was good for him to kind of approach it in the offseason. It'll be fine."
Allen averaged 11.1 points and 3.4 rebounds last season with the Bucks.
Horst added that Khris Middleton is continuing to "ramp up" his on-court work after hurting his knee in the playoffs.
"[He] looks great, really starting to ramp up his court work and his lifting and everything. He's fine."