The sports world is going Ape Sh*t over the news that KD signed with the Brooklyn Nets. To make this story even crazier is the fact that the Knicks had a chance to sign KD, as a matter fact, the Knicks was KD's first choice. However, the Knicks owner did not want to sign KD to a max contract. KD's injury in the playoffs is the reason for all of this chaos and is definitely the main reason why the Knicks owner was reluctant to to signing KD to a max contract.
Keep in mind, the Knicks have had their issues with Carmelo Anthony in the past who signed a max deal but he was unable to make anything good happen in New York. Carmelo's flop in New York played a major part in the Knicks owner's decision making concerning KD. So in a way you can say Carmelo helped the Nets land KD.
I'm not saying he is the only reason but he definitely had an impact.