This is correctly called a holding foul; however, let’s look to see when the whistle is actually blown.  On perimeter plays like these, an immediate whistle is needed.   These are NOT SDF (start, develop, and finish) plays when the players rhythm, speed, balance and quickness are all affected.

Red #0 disrupts #15’s balance while cutting through the lane. This shows great off-ball officiating by the lead as he is engaged to the match up coming into his primary area.