Right now, Tiago's salary is the only significant number on 2015-2016 payroll. So the Spurs are positioned to make a significant free agent acquisition if we assume that Duncan and Ginobili retire after next season. That payroll can quickly fill up as decisions are made on Diaw, Mills, and possible extensions for Parker and Leonard. If all those deals are done this summer and all come in at the higher end of expected salaries, and they use the full MLE this summer and they plan on keeping Green, then the ability to create sufficient cap space next summer could quickly evaporate. It's entirely possible, and entirely consistent with team payroll management history, that they do just that. By the end of this summer, the 2015 cap space could be all but gone and the opportunity for significant cap space rolled forward to the summer of 2017. In that scenario, they can easily pay to keep Patty.