The team has since confirmed the report, adding that the big man has been diagnosed with a left fourth metacarpal fracture and is out indefinitely.
While no timetable for his return has been set, Keith Smith of Yahoo Sports opines, based upon secondhand knowledge, that surgery will probably go forward tomorrow (depending on level of swelling) and Baynes should be reevaluated in about a month.
With the Celtics already facing an injury for starting big man Al Horford, who remains out with patellofemoral pain syndrome in his left knee, rookie big man Robert Williams will likely be looked upon to step up and play more minutes. Daniel Theis should see more playing time as well.
The Celtics also have an open two-way roster spot that they could use to sign someone with size and/or an interior presence, but there haven’t been any rumors of an imminent signing thus far.