What else would they be able to do to be a good team though? They just opened a new arena so you know Steve not trying to go through a rebuild this soon. Won't be a huge market for Harden anyway going by the last few years so it won't be hard bringing him back since that's their clearest path to remaining relevant.
He has a $35 million player option. If he opts out, I'm guessing he's going to want something in the range of $100 million/3 years? He'll be 36 in August.

At this point the best thing for the Clippers would be for him to opt in and then trade him at the deadline for expirings and draft picks.