5.) Danny Green
Everyone was sad to see Danny Green leave the 2-1-0 when the Spurs were forced to include him in the infamous Kawhi Leonard trade, and fans would be thrilled to have the veteran sharpshooter back in San Antonio. He was instrumental to the 2014 championship team, and he secured two more titles after going back-to-back with the Raptors and Lakers.
Though the quality of his play has slipped over the last couple of seasons due to age and injuries, the 36-year-old could be the perfect mentor to help this young core understand the dedication and work it takes to succeed at the highest level in the NBA. Finishing his career with the Silver and Black would be a beautiful end to his basketball journey.