I heard this from a fan asking a question to some ESPN reporter (Chad Ford I think but don't quote me on that).. and it made sense to me as well. So this is mostly a made up rumour by me, not something tangible. However if Portland does go after D'Antoni, and we all know they want to dump Felton to get a real PG - Portland acquiring Nash makes a lot of sense for both sides.
No need to dump Felton. He is already an UFA after the season.