Say all you want about Perkins, but OKC is going to miss his post defense. Ibaka's impact on defense might be a little bit overrated. Sure he can block, but can he anchor his team's defense? It was Perkins who changed the defensive mindset of OKC once he came in. I'd rather have Taj Gibson than Ibaka, regardless of the bpg difference. OKC won't find another 6th man of the year if they replace Harden. That being said, a sixth man should get sixth man money, nothing more.
Ibaka is easily the best shotblocker in the league and is only gettin 1.4m? Damn, that guy will look for some serious money when his contract is done. He's not even in Harden's situation who had a much, much better rookie contract and has made some money until now. Ibaka will ask for a lot of money and probably won't leaving anything on the table.