If I were Sheed, I'd be very concerned about Garnett's balky knee. Who's to say that guy can stay healthy for 100 games next year? For that reason I don't think he'll go to Boston.
I know the same might be said for Manu, but if Sheed plays beside Tim, and we have RJ and Parker on the floor as well, we're a top 2 team in the West even without Manu. With Manu, we're the best team -- yes, better than LA.
LA didn't have to beat a healthy Spurs team or a healthy Boston team this year, so they didn't have to beat the best. If Jameer Nelson had been healthy, Orlando would have won. LA is still overrated. If Garnett were healthy, Boston would have beaten them in 6.
So...if Sheed comes to the Spurs, we win the le. It's that simple. It doesn't matter what LA does or doesn't do.