I'm assuming Mills/Diaw come back at a total of $7-8m. Fits Diaws current contract(4) and 3/4m for Patty, which seems close to market value. Both are good/great deals at that money, but it's hard to see many others paying more. Diaw as he clearly mailed it in on a non playoff team, and Patty because no one has a great need for a starting PG. Jennings is terrible, but I can't see Dumars paying Mills, and most other teams have options.
Biggest need is a backup PF/C. Hard to fill that on a 1 year basis with a #30 pick. 4s/5s at around 30 on DX are Adrien Payne(24), Mitch McGary(33) AJ Hammons(36), Walter Tavares(39), Isaiah Austin(40), Patric Young(41). I doubt any on of those guys are an above average NBA player next year.(Maybe Payne, but he's 23, he should be ready). Frank Kaminsky is pretty interesting, though currently not projected as in.(22nd in DX 2015 mock).
It's realistically a FA target to try and get a tenth man. I don't think Pau is at all realistic with MLE, so I'd aim for Patrick Patterson(R)/Channing Frye/Jordan Hill/Ed Davis/Jeff Adrien. 1 of those would fill out a ten man rotation well.
Tiago/1 of above
TD/Diaw
Kawhi/Manu
DG/Marco
TP/Mills
Means we're in a position of drafting best available to be a 12th man/be stashed, as it's hard to see the draft addressing immediate need.