Knicks - Solidify Roster Identity. Like Jones, Mitchell was drafted by the Knicks and with his current unavailability, he can finish his rehab at home/closer to home in a more ideal situation. With KAT at starting center being so dynamic with Brunson, Robinson would need a change of scenery to get real opportunity that the current roster is structured.
Pelicans - Moves a player they drafted into an ideal situation while getting a local guy back who has the ability to sure up the starting center spot as the Pelicans regroup around Zion (desires to trade Ingram + CJ as well with their league worst record (12-10-24)). The draft capital is the sweetener on the deal to help the Pels regain some since they're in pretty dire need of it.