For those of you who are underwhelmed by Koeman's appointment, he has just taken Southampton to within three points of a Champions League place. Southampton! The same Southampton who have only finished in the top four once in their entire history. This was despite losing all his best players. He also did better than the supposedly brilliant Pochettino, twice, despite having to rebuild.
Apart from
only finishing 6th with Southampton, it appears that some have doubts about him because of his time at Valencia (although he did still win the Copa del Rey) and his brief stint at Alkmaar. Even the best managers can have bad seasons. Just look at Mourinho at Chelsea last season.
I think most on here rate Pochettino, but he didn't exactly cover himself in glory at Espanyol. The following is from his Wiki page:
On 26 November 2012, however, following a 0–2 home loss against
Getafe CF that left Espanyol in
last place with just nine points from 13 matches, Pochettino's contract was terminated by mutual consent.
What about Simeone? We'd all be delirious if we'd managed to recruit him after the fantastic job he's done at Atletico. Well, he failed not once, but twice in Argentina as the following from Wiki illustrates:
On 7 November 2008, Simeone announced his resignation as coach of River Plate after their elimination at the quarter-final stage of
Copa Sudamericana 2008 by the Mexican team
Chivas and a poor run of form of 11 domestic games without a win, which left them bottom of the
Primera División Argentina with only six games remaining. On 15 April 2009, Simeone joined
San Lorenzo to replace
Miguel Ángel Russo, following the club's exit in the first round of
Copa Libertadores 2009. On 3 April 2010, Simeone quit San Lorenzo due to poor results and mounting criticism.
Just about every manager has at least one poor season on their CV, even legends of the game like Ferguson and Clough. Ferguson was under intense pressure in 1990, and the general view was he was only saved from the sack by winning the FA Cup. Clough, after winning the league with Derby, then had disastrous stints at Brighton and Leeds, so his reputation was well and truly tarnished when he went to Forest. We all know what happened next. Matt Busby almost relegated Man U in 1963, finishing 4th from bottom. He'd be sacked these days.
Even top managers make mistakes, but what makes them top managers is they learn from them and they're able to change if something isn't working. Martinez will never be a top manager because he has an unwavering conviction, bordering on delusional, that his way is best, and is the only way. He's not prepared to compromise, even the slightest, on his philosophy.
Koeman, on the other hand, has learned from his past mistakes and has used those experiences to make himself a better manager. At this moment in time, Koeman has proven himself to be an excellent manager and, make no mistake, getting him is a real coup. Moshiri is no fool and is very knowledgeable about his football, so if he's good enough for him, then he's good enough for me.