Free agent Ivan Johnson is in discussion with the Knicks, a player source told ESPN.com. "I think it would be a great fit for Ivan to get big minutes [in New York] and further prove he can play in this league," the source said. The Knicks have a handful of aging, injury-prone big men, so the more depth they can get, the better off they'll be. Johnson did not get a qualifying offer from the Hawks and is an unrestricted free agent.