Spurs could do Pau + Forbes + 2018 1st in a S&T that would allow the Spurs to offer a contract starting around $30.4 million to CP3 and keep Green+ have access to the full MLE and LLE. Simmons is likely gone because they could only use the MLE to keep him but Manu might return to ring chase with CP3 in the fold or Milutinov and Hanga both come aboard. I think PATFO would hate to lose Green and CP3 would probably agree, i'm sure that Green has earned Pauls respect over the years as his primary defender and his rep as one of the best 3 and D players in the NBA.
Clippers get Pau, who they could potentially flip later in the season to a playoff team, and a 1st rounder (which is rare in S&T's. Obviously that's not great for them but it's certainly better than nothing.
PG-CP3-Murray-Parker
SG-Green-Manu
SF-Leonard-Anderson
PF-Adridge-Bertans
C-Lee-FA/1st Rounder (Bell?)-Milutinov
-(he seems like he will return, despite hopefully opting out of his P.O)
would prefer Bertans to start at PF and LMA at center in that scenario. CP3 would have 3 elite shooters surrounding the pick and pop with Aldridge and gives Leonard a lot of space to operate as well (CP3 shot 41% on 5 3's a game last season)