Trading Marbury is very possible. As specially after this season. He's got an expiring contract and 20-40 Million coming off the books (depending on when we trade him) is very appealing to a lot of teams. At the same time I'd like to see that money coming off of our books. But if Marbury is that much of an ass and absolutely must be traded, options 2 and 3 could work.
Option 3 may be more realistic and work in the benefit of both teams, while obviously option 2 would be the best for N.Y. but may be not as realistic.