5 Free agents Spurs should monitor to improve porous defense

4. Jae Crowder

Most of the players on this list are younger since the Spurs will likely be looking to add pieces that match up with the timeline of their core players. However, adding a veteran presence is a must. We saw what happened to the Memphis Grizzlies this year with no veteran leader to guide them.

Jae Crowder would bring an excellent defensive presence along with extensive playoff experience. Crowder has played in 111 games in the postseason and has taken on the assignment of guarding some of the most talented offensive players in the league in do-or-die situations.

Crowder would be an excellent addition to the Spurs as an energy player off the bench. He would not be required to carry much weight offensively, and his experience would allow him to be an effective mentor for Keldon Johnson and Devin Vassell.

Crowder will also be an unrestricted free agent this summer, coming off a season where he earned over $10 million. It isn't unusual for a team to empty the wallet when paying a savvy veteran, and impending contract negotiations with Vassell could factor into San Antonio's decision to sign Crowder.