A quick example trade (emphasis on quick) that may work is Carmelo Anthony and possibly one of the aforementioned point guards going to the Indiana Pacers in exchange for Danny Granger and Paul George.

The Pacers get a go-to scorer who can create his own shot and maybe a backup point guard to shore up their depth behind Darren Collison, while the Knicks get a three-point specialist capable of being the primary scorer when necessary in Granger and a young kid with athleticism, range and potential in George..

Source: http://bleacherreport.com/articles/1062297-new-york-knicks-why-the-knicks-need-to-trade-carmelo-anthony