That’s a “strictly business” decision.
Rose is a popular player, one that’s gonna sell some jerseys, tickets, and get the Knicks on TV (Rose!!!Melo!!!Porzingis!!!!!). He’s free — and probably already invited — to leave after the season. The cost to the Knicks were, in the words of KG, Nobody, Nobody and Nobody.
This comes straight from the Dumars playbook when he traded for Iverson, and it’s obviously a “let’s rebuild pretending we’re not rebuilding” maneuver. It’s smart, and would only be a typical Knicks trade if it was “Porzingis, Brooks and a first round pick for Rose, Gasol and Dunleavy”. Now Phil Jackson only has to find a way to convince Melo to go to Cleveland or Sacramento or Houston.