The Chicago Bulls have announced the following injury updates via press release:

Bulls forward Patrick Williams sustained a severe sprain of his left ankle during an optional individual workout on Sept. 15. Williams is currently undergoing daily treatment and is anticipated to make a full return in 4-to-6 weeks.

Bulls guard Coby White, who underwent surgery on his left shoulder on June 10, has made steady progress over the past four months and is anticipated to make a full return in November. White will participate in non-contact portions of training camp, which begins on Tuesday, Sept. 28.