I think there's quite a few factors going on at the moment.
We sold our best player to our closest rivals in terms of league position.
We bought players for large fees which raised expectancy.
We failed to buy a quality striker, or, cover for a few other positions.
On the last day, we tried to sell Niasse and Barkley to recoup money spent.
Our fixture list (with a new team) was as bad as we could have hoped for.
I don't think much of Koeman's footballing style, as it's hardly Barcelona-esque, and we are making far too many errors which are costing us.
Even last night, we should have been 1-0 down, when for no reason, Williams opted to play a short pass to Besic, who had a man-on, and turned only to lose the ball. It's stupidity from our players. Besic needs minutes on the pitch, but what is Williams excuse?
If I were able to change the team 'today', I'd get shut of Baines, Williams, Jagielka, Stekelenburg, Robles, Mirallas, Lennon, McCarthy, and Besic needs to step up as he tries to be too clever.
Hopefully we'll have both Bolasie, and Barkley back soon.