Spurs coach Gregg Popovich knows that his team's window to win another NBA title won't be open forever.

"Our time is now. Timmy [Duncan's] time is now. He has three years left on his contract," Popovich told the Boston Globe. "Something tells me that you don't have to be too smart to figure out that the next three years are probably going to be better than the three after that."

San Antonio has added Richard Jefferson, Antonio McDyess and DeJuan Blair this summer, which Popovich admitted took some arm-twisting of longtime owner Peter Holt.

"We told him that if we were going to compete, we had to go over the [tax threshold]. He did not like that answer," Popovich said. "But he also said, 'I don't like it, but I understand it, so go out and do what you need to do.' "