The Denver Nuggets and Jonas Valanciunas are about to be locked in a staredown. Denver agreed to a trade for Valanciunas, the veteran center, earlier this week. Then reports came out that Valanciunas had been offered a multi-year contract by Greek powerhouse Panathinaikos.

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.

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.