Among the various challenges in pinpointing the order from Nos. 3-8, league sources say, is the uncertainty emanating from Philadelphia and Charlotte. Sources say that the Sixers and Hornets have signaled to rival teams that they will listen to trade offers until they’re on the clock at No. 3 and No. 4 respectively. The Sixers, as The Stein Line confirmed last week, have also approached San Antonio about moving up one selection, which we can only deduce would be to nab Harper for themselves.