Working to clear the logjam in the backcourt, the Knicks are discussing their potential trade options with guards J.R. Smith, Iman Shumpert and Shane Larkin, a league source said Sunday. “They’re working on trying to make a move in the backcourt,” the NBA source familiar with the Knicks’ thinking said Sunday. The idea that the Knicks are trying to make a trade to balance the roster isn’t earth-shattering. President Phil Jackson and GM Steve Mills have mentioned the Knicks have a surplus in the backcourt, with Mills saying last week the Knicks are “heavy” at shooting guard. The issue for the Knicks, of course, is deciding whom to send out in a trade and figuring out what they can get in return in such a transaction. Read more http://espn.go.com/blog/new-york/knicks/post/_/id/58074/source-knicks-open-to-dealing-j-r-shump