Spurs think Tim Duncan will be back for a 19th NBA season
Although Duncan and fellow Spurs mainstay Manu Ginobili have yet to make a formal declaration about their plans for next season, sources told ESPN.com that the Spurs are optimistic about re-signing both at salaries that will also allow them to re-sign prized restricted free agent Kawhi Leonard this summer as well as pursue top-tier free agent LaMarcus Aldridge.