From NBADraftroom
Strengths
Barrett stands 6-8 with broad shoulders, good strength and superior coordination. Athletically he's head and shoulders above the competition and he can overpower and/or blow-by just about any defender that gets in his way. His physical gifts allow him to play anywhere on the floor and guard multiple positions.
Barrett is becoming a complete offensive player with a good looking shot (lefty), nice handles and high level passing ability. He's developing point-forward skills and is great in transition, both as a ball handler and at filling the lane. He dribbles with his head up and has a great feel for the game and excellent court vision.
An outstanding free throw shooter who knows how to get to the line. Barrett does a nice job of drawing contact on his drives to the rim and has the strength and creativity to finish the old fashioned three point play. He also has a really nice mid range game, showing an array of floaters and pull up jumpers.
He's a great pick and roll ball handler who has a natural feel for spacing and hitting cutters. He's a good enough shooter that you need to guard him to the three point line, which opens up his great dribble-drive game.
Defensively he can guard 4 positions and he plays with intensity. He is quick to react to the ball and uses his length well to pester the ball handler and play the passing lanes.
A competitor who steps up in big moments, Barrett is at his best with the game on the line or when facing a high level of competition. He seems to have that it factor that separates the great players from the good players.
Weaknesses
It's hard to find a true weakness in his game. He needs to improve his outside shooting and continue to grow as a decision maker but his development is far advanced. Could tighten up his handles a bit, as he tends to have a high dribble at times, and needs to do a better job of finishing with his right hand.