Slaven Bilic departed West Ham after managing them for 109 games, having taken over in the summer of 2015. He had left Besiktas earlier that same year.
Incoming manager David Moyes has not been given the warmest of welcomes from the West Ham supporters, and unsurprisingly so, as his last three managerial appointments weren't all that inspiring.
He hadn't been at Preston for a full season before he was tasked with the Everton job, where he oversaw a highly respected 504 games in eleven years, so far so good. Sir Alex Ferguson then departed Manchester United and had a massive part to play in the hiring of Moyes at Old Trafford.
Now, it was always going to be tough to follow arguably the greatest manager of all time, but the problem that Moyes had, is that it seemed like he couldn't control the dressing room in the same way that Fergie could.
He didn't complete his first season in charge of United and was sacked with three games left with Manchester United out of the League Cup (lost in Semis to Sunderland), out of the FA Cup (lost in the 3rd round to Swansea), out of the UEFA Champions League (lost in the quarterfinals to Bayern Munich) and seventh in the Premier League. Not good.
Since then, he has had an unsuccessful stint in the continent, with Real Sociedad and took Sunderland down to the Championship and quit, so you can sort of understand why West Ham fans would have preferred if they'd gone with someone else.
Let's have a look at the 5 best managers who were available for West Ham to appoint:
#5 Ronald Koeman
The Dutchman was sacked after he oversaw a poor start to the season up at Goodison Park. It's not that black and white, though, regarding their start to the season.
If you look at Everton's fixtures, they faced five of the top six in their first nine games and with the money that Koeman spent in the summer, you think he would have been handed a bit more time, especially considering more 'favourable' fixtures are coming up.
Senior Games Managed: 647 | Wins: 346 | Draws: 138 | Losses: 163
Having moved to the Premier League from Feyenoord, he made a superb impression at Southampton after having big boots to fill with Mauricio Pochettino departing for Spurs and he didn't only fill them, he did pretty well with a PPG record of 1.64, hence Everton cherry-picked him from the south coast.
It would have no doubt been an appointment that would've pleased the masses a lot more than Mr. Moyes and with West Ham facing Everton on the last day of the season, imagine the motivation he would have had to get one over his old club.
It's difficult to know whether or not Koeman would've wanted to get back into management so soon after leaving Everton, but, if he did, he would have most definitely improved West Ham.