Horford is questionable for Tuesday's matchup in Milwaukee due to a left big toe sprain, Justin Turpin of WEEI.com reports.
Horford and Kristaps Porzingis (hamstring/rest) are both questionable, but the rest of Boston's roster will be available Tuesday. If both big men are downgraded to out, Xavier Tillman, Luke Kornet and Oshae Brissett would be candidates for increased playing time.