It's hard to say how much substance this has, or if talks are ongoing, but this is a juicy rumor from Frank Isola and the NY Daily News:
The Daily News has learned that the Boston Celtics and Cleveland Cavaliers have discussed a blockbuster trade centered around Kevin Love. There were very preliminary discussions about expanding the deal to include the Knicks and Anthony, who would have to waive his no-trade clause in order to facilitate a deal to the Cavs.
The Knicks would receive draft picks and players in return. One of those players is believed to be Timofey Mozgov, who five years ago was traded by the Knicks to Denver in the Anthony deal.
Those talks have not progressed.
I can see the appeal for all three teams here, but it might make more sense for all involved to pursue something like this in the summer.