Honestly the best chances for Cs to get Durant are to impress/ intrigue him this summer, but that he ultimately signs a one year deal with OKC, then Cs sign one max FA this offseason (Hordord) and Cs go on to outperform expectations in regular season and playoffs whereas the Thunder and Warriors (biggest threat IMO) underperform. Then I think we have a good shot next summer.
Basically my biggest worry now is that Durant signs with GSW this summer. They are so much closer than we are. They are a loaded contender.