The Nuggets aren't going to back out of their deal with the Kings for Jonas Valanciunas, and they reportedly won't free him from his NBA contract to play in Greece.

While ESPN's Shams Charania reported Tuesday that the Denver Nuggets agreed to acquire big man Jonas Valančiūnas in exchange for Dario Šarić, the former might not play in the NBA next season.

Jonas Valanciunas has been lured into considering a return to the EuroLeague, where the Greek club Panathinaikos has offered him a three-year contract worth $13 million, according to a report by BasketNews. One problem: Valanciunas is under contract in the NBA. For $10.4 million next season, to be exact.