I personally think it has less to do with him ?pressing? and more to do with having too many cooks in the kitchen to use a metaphor. I think it is becoming increasingly clear that him and Greiz struggle together on the pitch precisely because they operate in the same spaces. Last night, we threw Phil out there and then we had 3 players all trying to do the same thing and occupy the same spaces.
Koeman has to take the blame for this. Osasuna & the CL games demonstrated how much we need TRUE wingers like Ansu, Dembele and Trincao. We are never going to have the space we need if we do not have pace in behind their lines that stretches the space between the opponents defensive lines. And playing Greiz, Messi and Coutinho behind Martin gives you nothing in that regard.
The same thing with the pivots: I don?t understand why he still plays Busi and Frenkie when, again, they do the same things and like to occupy the same spaces. There is simply too much redundancy and it stifles our danger on the ball. This spells out my point rather succinctly:
Agree. But lack of applied pressure when the possession is lost is also a big issue against a deep block.
So, when you play a deep "bus" so to speak, naturally, as a defending team, you win the ball back (when you do) very close to your 16m area. That's risky, and a big reason why parking the bus invites a lot of pressure in dangerous areas. So if the attacking team is intense and pushes up with an aggressive press, two of the following things usually happen: you either win the ball back and catch your opponent off position (since they expand by transitioning from defensive to attacking phase), or the defending team kicks it long to basically avoid bad give-aways due to pressure mounting. But if you do not apply pressure, they have enough time to orchestrate counters and punish you for committing too many men forward.
And that's what Cadiz did in the 2nd half. Very rarely were they forced to kick it long because we rarely pressed well. Usually, they just maneuvered the ball starting from deep and even created dangerous counters that could've ended in even more goals conceded for us.
So, the thing with too many cooks is true, but this is only a problem in our positional attacking phase. There are many more problems in more aspects of play, because a slow, low work-rate, lazy team brings bad things everywhere. Here, the lack of pressing and counter-pressing is making our transition game slow and ineffective. Fast transitions and efficient counter-pressing is exactly how you punish teams that defend too deep. That's why we're unable to exploit gaps in the opponent's line when they appear.
We are so bad at creating and exploiting space that we made a mediocre team like Cadiz look like 2010 Inter.
It's a lot of waffle about nothing, philisophical bullshit. There are about 3/4 teams that press consistently and even they don't do it all the time. 
