The Minnesota Timberwolves' Karl-Anthony Towns trade with the New York Knicks sent shock waves through the NBA world last September. Of course, the Wolves got back Julius Randle, Donte DiVincenzo, and a first-round pick back (which later became Joan Beringer). At the time, this trade was highly controversial as Towns had been such an important part of the Timberwolves franchise and was widely viewed as a better player.
The general consensus at the time was that the Knicks won the deal and that the Timberwolves took a step back after making their first conference finals since 2004. After both teams made the conference finals, negative talk about this trade largely cooled down.