By Zach Koons New York doesn’t want to give up its own budding star in its pursuit of Donovan Mitchell. The Knicks are reportedly one of the teams interested in getting in on the possible Donovan Mitchell sweepstakes, but the franchise doesn’t want to give up one of its own budding stars to do so. According to Ian Begley of SNY, New York has “no interest” in trading former No. 3 pick RJ Barrett in any deal this offseason. The new detail comes after The Athletic’sTony Jones reported on Tuesday that the Knicks are reportedly looking to put together a package to go after Mitchell. New York’s inte…