Gregg Popovich signed a three-year extension with the San Antonio Spurs in April. However, when the future Hall of Famer made a Dirk Nowitzki reference on Monday with his team in Dallas, the topic of retirement came up.

Popovich will surely coach out his contract. After that, who knows what will happen.

As we all know, Popovich is one of the best coaches in NBA history. He has won five NBA championships with the Spurs as head coach and has advanced to the NBA playoffs a league-record 22 consecutive years.

This year's Spurs are going to face an uphill climb to make the playoffs. San Antonio entered Monday with a record of 5-8 and on a five-game losing skid.

It remains to be seen what Popovich ends up doing after his contract ends. He turns 71 in January and has been working with the Spurs since 1988.

It has been a Hall of Fame run for Popovich, and he doesn't have anything else to accomplish in the league. Put simply, Popovich is still coaching for the love of the game at this point.

For the Spurs to make the playoffs this season, All-Stars DeMar DeRozan and LaMarcus Aldridge will have to get it going. Both guys have been inconsistent to begin the 2019-20 campaign.