What sucks is that we don't really know if Kaku himself was the money wasted, or if his investment was wasted by not spending more money on coaching and additional attacking talent. Younger, budget-friendly signings = guys less likely to singlehandedly change a game.
Basically, was he Claudio Reyna wasted money or was he Thierry Henry wasted money? Stick a stud #9 in front of him, a decent coach behind him, and he's among the league leaders in assists. For me, more likely that he was Thierry Henry wasted money. Typical RBNY post mortem.
Kaku's legacy post-2019 will be playing fantastic through balls into Tom Barlow, who then hit it directly at the keeper. A wasted talent.