Jaylen Brown Assists Prop is currently Over/Under 2.5 (+105/-135).
The money has been on the Under as it opened 3.5 @ -160 before it was bet down to 2.5 @ -135.
FACTORS THAT FAVOR THE OVER:
The Boston Celtics have been the 2nd-best offensive rebounding offense in the NBA over the last 5 games (offensive rebounds maintain possession and may therefore provide added opportunities for scoring and assists).