Thad Young is a great trading chip for the 76ers. They can use him to upgrade other areas. No one is taking the contracts of Brand of Iggy. They are both cap killers.
The 76ers have Brand/Speights at the 4, and Thad can't play centre. The pay an fortune for Brand, and Speights is developing nicely. Speights is also big enough to play the 5 along side Brand at the 4. Plus Thad when used at the PF position is small. Speights is 6'10", Thad is 6'8".
Iggy is not a 2 guy, so they'll slot him into the 3. That run at the 2 was a total fail. It is possible that the 76ers take Evan Turner with the 2nd pick to address the 2.
Hawes/Brand/Iggy/Turner/Holiday. Noc becomes the 6th man due to his defence. Speights backs up Brand unless Collins goes small ball (which he has never done in the coaching career).
Collins isn't dumb enough to start Brand at centre and Thad at the 4. That would be the smallest line in the league and would be destroyed.
I can also see the 76ers selecting Derrick Favors as the team is now lacking in defence and rebounding, something Turner doesn't bring to the table. If they go Favors, then they still need a better 2 guard than Willie Green. Hence, Thad Young becomes the trade bait. His position at the 4 is covered by the inclusion of Favors, and Iggy/Noc/Carney can cover the 3.
In the Favors scenario, Thad Young is a luxury which could be flipped for an upgrade SG.