Not everyone hits the ground running, plenty of good managers have had rough starts at a club, and plenty of of mediocre ones have had brilliant ones. In some cases you see a manager having an instant impact, in other cases you dont really see the fruits of their labor until 1-2 seasons have passed.
If it had been the case that we were a decent side with a squad that was young, hungry and talented, a decent leadership and good structure it would be a different story. We were not though, the squad was a trainwreck, a useless CEO running the show, morale was a rock bottom, fitness levels were shite and there were plenty with questionable attitudes among the players. It was a complete shitshow from top to bottom
Take AC Milan as an example, they were a fantastic side not to long ago with a rich history, huge fanbase yadayadaya, but they are a horribly run club with an utterly insane owner. They last won the league in 10/11 under Allegri and they had a fantastic core of players including the likes of Nesta, Thiago Silva, Pirlo, Gattuso, Van Bommel, Boateng, Inzaghi, Seedorf and Zambrotta. The following season they ended up 3rd and then they sacked Allegri midseason the following year being 11th in the table. Must mean Allegri is clueless right? I mean, he took a objectively fantastic team from 1st to 11th, what a muppet !
No. Despite that 10/11 Milan side having a fantastic group of players, most of those players were at the very ends of their career and should have had decent replacements lined up, but since the club lacked leadership, infrastructure and direction from the top that never happened. The following years they did one poor transfer after the other and had no less than 9 managers from 2014-2019, thinking that simply changing managers would solve everything when the squad was getting progressively worse and the infrastructure around the manager was completely lacking. I dont know if any of these 9 managers they've had in the last five years would have been the right one to take Milan back to glory, but none of them really got the chance either
Half a year after Allegri was sacked from Milan for supposedly doing a bad job he was hired by Juventus, a club that is well known for being a incredibly well run club, with a fantastic scouting network and he won 5 league titles in a row. Coincidence? City have not won 4/8 PL titles the last 8 years because they've had the best managers, most of it is down to them having done massive investments in both squad and club infrastructure and being properly run from top to bottom.
Ours isn't a case of a well run club with a good squad that was simply looking for a manager to take us to the next level. Yes, Jose managed second in 17/18, hes probably the best in the world at exactly that, but his style of management is not sustainable either over longer periods. Jose himself called it "his greatest achievement" and if Liverpool, Spurs or Chelsea had actually turned up that year i highly doubt we would have placed that high on the table
In my opinion, the Rumenicke rumors (if true) are the biggest news we've had in a decade, because that means we can finally have someone at the top who can oversee the rebuilding process and do a proper job. Ole isn't the best manager in the world, but hes not the main problem. And even if Ole turns out to be the wrong man for the job there is little point in sacking him mid season as it only puts the next one in line in a really tricky position