In this scenario, the Sixers receive Jeremy Lin as frequently discussed, but instead of future draft picks also obtain James Harden. The Rockets free up $23MM in cap space, which we have available, to go along with the $8MM freed moving Omer Asik, and have enough money to sign both Carmelo Anthony and LeBron James. Cutting loose a couple other minor non-guaranteed deals, Carmelo and LeBron can get up to about $17MM each in year one, and if need be, Dwight Howard, after this year, is allowed to renegotiate his deal downward a bit to spread the excess to upgrade Carmelo and LeBrons salaries for the next couple years after that. Once this is complete, Houston resigns Parsons, and runs out a starting lineup of Beverly, Parsons, Anthony, James and Howard.
The Sixers meanwhile can roll out a starting lineup of MCW, Harden, McDaniels, Young and Noel, with Lin the backup PG, all the rest of the draftees and 2nd year players, and Embiid, Saric, and Milic on the way. Lin's contract goes away after the season, but you have acquired a star SG along the way at a fairly reasonable price of $14MM in year one. The JRich deal also goes away at the end of the season, and you can move Thad too if Noel moves to PF, Saric comes over early, or Grant blossoms as a suitable athletic replacement for Young.
The Rockets are instant favorites for the title the next couple seasons, and Morey keeps Harden out of the west. Meanwhile, The Sixers have secured a big piece of the puzzle for nothing but their cap space for 2014. Assuming Thad and JRich and Lin are gone next year, the only non rookie deal you have on the books to start next season is Harden, and you have all the cap room in the world to go after another top FA next offseason, and a much more attractive team with which to recruit.