There are lots of decisions to make for the Spurs this offseason. Although there is not loads of cap space, a bevy of moves can be made. One of those moves involves solidifying the future of DeMar DeRozan.
In 2016 the four-time All-Star signed a lucrative 5-year/$139M contract. He played two of those years in Toronto before joining the Spurs for the third year on his contract. He has a player option on the final year which terminates in 2021. This summer he is eligible to be extended.
Based on standard operating procedure for PATFO, it’s possible the Spurs make that offer.