Indy wouldn't do Sabonis, an all star level player, for TL, who has potential but also an injury history. TL also replicates some of what Turner does, but Turner has a much better outside shot.
You would be asking Indy to give up its best and second best player for two players with potential but with injury histories, a salary dump and two firsts, which would be worth a lot less with Sabonis and Levert on the Cs.