I agree that decision looks odder all the time re Koeman. Had we have known we'd be where we are now I suspect we'd have all kept Koeman until the end of his 3 year deal and moved him on.
That being said, the rumour has it that Koeman informed Moshiri he was unable to manage the squad any longer so we didn't have much of a choice.
I think we can get bogged down in how the situation was handled but what's clear to me was he was a very odd, and ultimately poor appointment to start with. We also didn't put the right processes in to begin with and went about it the wrong way.
It was telling when Silva said that if you just spend money you can't expect success. I feel that was what we did initially. The money needs to be spent, with a very specific MO and in a tactical manner that fits a broader plan. It's good Silva is on board with this.