Lamb is also only playing 4 mpg for them. I could see Martin resigning with them, as he's probably happy with the team and his role, and he costs less than what Harden wanted.
Lamb hasn't proven he's ready to take over for Martin.
So if they preferred a veteran, and didn't feel they would have had time to develop a draft pick from the Kings (because it's not like they've been able to develop Lamb or Perry Jones either, and Maynor, another young player, is having his worst year.)
But I do think Evans + Fredette + a mildly protected pick (say top 3) is in the ballpark of what OKC might have wanted, and I hope Petrie at least offered that.
The Toronto pick from Houston actually seems good for OKC. Here are the conditions, from real gm:
So because it's only top 3 and 15-30 protected in 2013, adn top 2 and 15-30 protected in 2014, that's about as good as what the Kings pick would have been anyways.2013 first round draft pick from Toronto
Toronto's own 2013 1st round pick to Oklahoma City via Houston (Top-3 Protected and 15-30 Protected in the 2013 Draft, top-2 protected and 15-30 protected in 2014, top-2 protected and 15-30 protected in 2015, top-1 Protected and 15-30 protected in 2016, top-1 protected and 15-30 Protected in 2017 and unprotected in the 2018 Draft. [Houston-Toronto, 7/11/2012 and then Houston-Oklahoma City, 10/27/2012]
So OKC could get a 4th-14th pick from this year's draft from Toronto.