Spurs have the best starting wing combo in the league in Danny/Kawhi who, if needed, can handle playing 40 minutes in a playoff series.
What the team is lacking is a TWO-WAY point guard like Conley & a mobile 4/5 like Horford/Biyombo/Ian. Since it's possible to hide Porker or not miss much by benching him for whoever replaces Patty(

), the mobile 4 is imperative as they will essentially be involved in every play (ala Tristan).
If Tim retires then I wouldn't mind throwing 3yrs/50mill on Biyombo (less that Tristan's deal) as opposed to giving Horford 4yrs/100mill. Now that Ibaka is gone, Horford/LMA would get a full dose of Adams/Kanter/Sabonis who would maul them on the boards.

I also wouldn't mind Ian for something like 3yrs/42mill although he's also a mediocre rebounder.
As far as backup PGs, I hope Fatty gets moved & is replaced by someone who can actually be effective when their shot isn't falling.

Looking at two-way backup PGs on the market, Delly is overrated & is thus going to get overpaid but E'Twaun Moore would be nice if the Bulls don't plan on bringing him back. Vasquez is a ty defender but he can at least run the offense & drive so he's also an option.
IMO, if Tim doesn't retire then there are going to be a lot of FAs that won't sign b/c they don't want to come off the bench. At this point, I hope he just hangs it up b/c knees don't get better with age. Best case scenario, he's willing to come off the bench for the minimum then PATFO can sell him as a mentor, which should especially be attractive to someone like Biyombo.