Looking back on it two and half years later, Derek Fisher wishes he could have seen the signs from the start.

Phil Jackson’s first hire as Knicks coach, who lasted a disastrous season and a half before Jackson pulled the plug in February 2016, did not fully understand Jackson’s wishes when he took the job, namely that the triangle offense was mandatory.

Fisher, in an interview with FS1 that airs Thursday, said he has regrets about his jumping right from a player in 2013-14 to a coach in 2014-15; he did not yet have the wherewithal to talk to the man who was hiring him about the role’s specifications.

“I wasn’t smart enough to ask the right questions going into taking and accepting the job,” Fisher said on “The Fair Game Show,” via ESPN. ‘What are you going to expect from me? Do I have to run the triangle? If I don’t want to run the triangle, is that going to be a problem for you?’ Those are things that I wasn’t prepared to coming straight from being a player.”

Before Fisher took the job — which ended with a 40-96 ledger — it was handed to Steve Kerr, who eventually reneged on the deal and fatefully wound up with Golden State. Fisher suspected the more veteran Kerr knew what he would have been getting into with Jackson and the Knicks.