Summary
Shamet had a really nice start to his career, getting playing time right away as a rookie for the 76ers and Clippers, and even had some really nice playoff moments. However, Shamet struggled in '19-'20 with the Clippers and again with Brooklyn in '20-'21, getting far fewer playoff minutes than he did as a rookie.

After hitting 43% from three as a rookie, Shamet only hit 38% from three from 2019-2021, which was still above average but not elite. Shamet is not just a stand-still shooter, as he has the ability to rise and fire on-the-move, and is a real threat coming off pindowns. His size limits his ability to shoot over contests, but he can still hit with a hand in his face.

Shamet can make some plays off-the-dribble, but he's limited in that area to attacking hard closeouts, rather than being someone that you can give the ball to late in the clock and expect him to create on his own.

Where Shamet really struggles, particularly in the playoffs, is on the defensive side. Shamet's size hurts him, as he doesn't have the length or strength to guard wings. In the playoffs, teams will put him in pick-and-roll until he is forced to switch on the opponent's best offensive player, which is a disaster for Shamet. If Shamet can either improve defensively or make enough shots that you can't take him off the court, he could get a big contract as a free agent in 2022.
 
Cap Considerations
Shamet will be a restricted free agent with a $11.3 million cap hold and full Bird rights. Because of their luxury tax concerns, the Suns may refuse to tender him a QO, making him an unrestricted free agent.

Other teams will have multiple ways to sign Shamet as even teams without cap space could possibly use either of the Non-Taxpayer MLE, Taxpayer MLE, or possibly even the Room MLE to sign him to an offer sheet or sign him outright if he's unrestricted.