Challenge: Both teams must trade a player picked 20th or later in the draft and the trade must help both teams
Celtics get Nic Claxton (drafted 31st overall) to help their main hole: the C position. This gives the team a big that does everything they need a big to do to help them contend this season, as well as when Tatum comes back. They also give up an expiring contract in Anfernee Simons.
Nets, who are in the middle of their rebuilding phase, get Anfernee Simons (drafted 24th overall) and a 2031 first that could end up valuable down the line, depending on both Tatum and JB. This allows them to become more reliant and focused on the development of their younger players, namely the rookie Danny Wolf and their 24 yo big Day'ron Sharpe.