CAMDEN, N.J. — The Boston Celtics and Philadelphia 76ers have agreed in principle to swap the Nos. 1 and 3 picks in Thursday’s NBA draft, and Philadelphia is expected to use the No. 1 pick on Washington guard Markelle Fultz, multiple media outlets reported Saturday.
The Celtics will receive additional picks in the deal, sources told ESPN — a 2018 first-rounder that the 76ers had via the Lakers, and another future first-rounder. Specific protection of those picks is not yet known.
The trade is likely to be finalized Monday.
Fultz worked out for Philadelphia on Saturday. Donning a 76ers cap as he arrived at…