Summary
Joe was the #49 pick in the 2020 draft, and is known for being a shooter. He shot a respectable 38% from three this season, but probably needs to hit above 40% if he's going to make an impact in the NBA, as he doesn't do much else. At 6'4" and very thin, Joe will likely struggle defending bigger wings unless he is able to put on some weight. If Joe can learn from former 76er J.J. Redick and become an elite shooter, he'll be able to stick around in the league.
 
Cap Considerations
Joe's $1.5 million salary for 2021-2022 is non-guaranteed, and if he is waived he will become an unrestricted free agent and the 76ers will have no form of Bird rights on him. If he is waived, any team could claim him off waivers since he is on a minimum contract.

If Joe becomes a free agent, other teams will have multiple ways to sign him 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. If Joe is waived and clears waivers, his value will be low enough that he would likely only have offers for the minimum.