The Los Angeles Clippers remain unwilling to add Terance Mann or any additional draft picks in a potential trade for James Harden, sources told Jake Fischer of Yahoo! Sports.

The Sixers are looking for a second first-round pick, a first-round pick swap, and expiring contracts in exchange for Harden. 

The Clippers have no interest in sending out a second first-round pick in a trade. The team also values its unprotected first-round pick in 2028 so highly that they've explored trading that pick to a third team for two first-round picks, sources told Fischer.

Harden, who has reportedly conducted his Sixers return in a professional manner, will likely open the regular season with Philadelphia.