In fairness he may be getting a bit of a disservice from the wider fanbase since only match goers actually saw him play without Rooney & Sigurdsson vs Sunderland.
My worry is that when I have seen him, he's not looking to get among it, track, make tackles or anticipate second balls in the midfield area. Ok this may not be his game, but when you are having a bad time of it, these are the default basics you apply to take the heat off.
There have been signs of brilliance and quick thinking when we have shifted forward quickly, but these instances are so few and far between given our lack of overall pace and movement around him.
Koeman's tactics are also making things harder than they need to be for a few of our players right now.