I wouldn't trade IT for just picks (he is a top-3 scorer and drafting means unproven players), but a package of Saric + a high pick would be a tempting option, besides the Myles Turner one.
However, I think that IT's being traded depends strongly on two factors:
1. The lottery. If we have a top-2 pick and so the option to select Fultz or Ball, the trade can be closer.
2. Play-off performance. If we get into the NBA finals, for example, with a very good IT, the pressure for not trading IT would be gigantic. Anyway, we know Ainge and he could get the sell-high route.