I still think Isaiah will net a pretty good contract this summer.
I could see a team like the Knicks or Magic offer him something around 2/40M, or 3/60M (3rd year option). Or the Lakers, if they strike out on all max options, could sign Isaiah to a 1 year, near-max deal, which hypothetically they could also use as a salary-matching asset if they do want to acquire some star at next year's deadline (since he's also an expiring).
But I think Isaiah needs to make a wise decision here. Continuing to play and damaging the hip even more could be very detrimental and possibly cost him his only chance(s) at getting paid in the near future.
He's not getting a max (unless the Lakers are fine giving him a 1 year max), but he still has a shot to garner a decent 2-3 year contract at around 17-20 M/Year.