Iman Shumpert had a second left knee operation over the summer, the Daily News has learned and it is unclear if the unreported surgery could impact his trade value with the desperate Knicks trying to package Shumpert in a number of proposed deals including one for Boston's Rajon Rondo. According to a source, Shumpert had arthroscopic surgery on his left knee last July that the Knicks never reported. In September, the Daily News reported that Amar'e Stoudemire had knee surgery over the summer which the Knicks also elected not to make public. Shumpert originally tore the ACL and meniscus in his left knee against the Miami Heat during Game 1 of the 2012 NBA Playoffs. Shumpert didn't return until Jan. 17, 2013 and has experienced soreness on several occasions, including the Knicks second round playoff series against Indiana. In October, Mike Woodson cryptically said that Shumpert "battled this summer with some of his injuries" and added that Shumpert did experience knee pain but left it at that. Except for missing a few days of training camp due to what the Knicks claim was a shoulder injury, Shumpert has been available for all nine games this season but has clearly fallen out of favor with Garden Chairman James Dolan and head coach Mike Woodson. The Daily News reported last Wednesday the Knicks were trying to work a deal with the Denver Nuggets that would include Shumpert and Denver power forward Kenneth Faried. There are also reports of the Knicks talking to the Sacramento Kings about a deal for Shumpert. Coincidentally, Kings forward Jason Thompson is represented by Leon Rose, the agent for Carmelo Anthony, J.R. Smith and Chris Smith.