McMenamin offered more details on the injury later on Friday:
He already had the bone spur prior to joining the Cavs, multiple sources with knowledge of the situation told ESPN. The team became aware of the condition after Rose underwent imaging on his ankle after hurting it against the Milwaukee Bucks in late October. Surgery could be necessary, as Rose alluded to, but the Cavs believe that is more likely an offseason option, sources told ESPN. For now, it will be a pain tolerance issue for Rose as he works to get through the injury with the help of the Cavs' medical staff.
Rose hasn't played since Nov. 7 against the Milwaukee Bucks due to what was initially described as a sprained ankle.
In Rose's absence, the Cavs have gone 13-1, and they are currently in the midst of a 13-game winning streak.
Rose returned to the team recently after leaving for nearly two weeks to mull over his NBA future. Per McMenamin, Rose apologized to the team and cited frustration regarding his ankle injury as the reason for his absence.
The 29-year-old veteran signed with Cleveland during the offseason, and in seven games this season he is averaging 14.3 points, 2.6 rebounds and 1.7 assists per contest.
Injuries have taken a toll on the three-time All-Star since he was named the 2010-11 NBA MVP with the Chicago Bulls.
From 2011-12 through 2013-14, Rose appeared in a total of just 49 games.
He played in 64 or more in both 2015-16 and 2016-17 with the Bulls and New York Knicks, respectively, but durability issues continue to haunt him.
With dynamic guard Isaiah Thomas expected to return from a hip injury this season, Rose may find playing time difficult to come by when he returns since Thomas, Dwyane Wade, LeBron James and J.R. Smith will all have ball-handling responsibility.