Robert Williams will have an arthroscopic procedure on his knee this week, which will force him to miss training camp, according to Sean Deveney of Heavy.

A source tells @HeavyOnSports that @celtics C Robert Williams will have an arthroscopic procedure on his knee this week.
More:https://t.co/dhHmSq3Gcx

— Sean Deveney (@SeanDeveney) September 20, 2022

ANALYSIS: This could be a problem for the Celtics since they've already lost Danilo Gallinari for who knows how long from an ACL tear. With Williams out. With those two out, Boston's big rotation consists of Al Horford, Grant Williams, and Luke Kornet. They may have Mfiondu Kabengele and Noah Vonleh, but those two are far from proven. Don't be shocked if they add another center in the meantime.