In the most surprising announcement of the year, Arsene Wenger, who served as Arsenal’s manager for more than last two decades decided to leave the club at the end of 2017-18 season, ending his 22-year career as the longest-serving manager in the Premier League.
The Frenchmen during his stay won seven FA Cup titles along with three Premier League while at the helm of the north London club, the last of which came as a result of the unbeaten 'Invincibles' season in 2003/04.
In the Premier League cycle, Chelsea sack Italian Antonie Conte at the end of 2017-18 season, while Manchester United parted ways with Jose Mourinho after his side loses 1-3 against Liverpool in the English Premier League game.
In other major fallouts within a week after winning third UCL in as many attempts, Zinedine Zidane calls it time over his Real Madrid job, he was replaced by former Spain boss Julen Lopetegui but even his spell lasted for only 138 days and he was sacked after Real loses against Barcelona 5-1.
This was a massive setback for Julen as he lost his Spanish national team job for Real and within five months he was out of favor from Madrid based club also.
Also, Unai Emery was released by Paris Saint Germain despite successful Ligue 1 title win while Argentina parted ways with Jorge Sampaoli after poor show in Russia.