The Premier League season hasn't even been over for a week and four managers have already lost their jobs.David Moyes was the first to go after his contract expired with West Ham, despite the Scot efficiently guiding the Hammers to a respectable 13th-place finish.Then it was Sam Allardyce who was shown the exit door, with Everton clearly thinking that despite his 8th-place finish, the club need a new manger with a more aesthetically-pleasing playing style.And today, Carlos Carvalhal and Paul Lambert have left relegated sides Swansea and Stoke, completing the quartet.The sheer level of managerial exits throughout the season as well was incredibly worrying. Marco Silva at Watford, Frank de Boer at Crystal Palace and Mauricio Pellegrino at Southampton just some of the names on the list.It's only in recent years that managing a football club has become such a cut-throat industry and old-school pundit Chris Sutton perfectly summed it all up in a tweet.

SUTTON'S TWEET

He wrote: "Lambert, Carvahal, Moyes, Allardyce gone.... long term planning and trust is a thing of the past... short termism sadly looks like it’s here to stay... pity some owners can’t be sackable..."

It's a very valid point, with one fan in the comment section pointing out that Burnley have succeeded of late by doing the opposite; placing faith in Sean Dyche.

Twitter user Matt Donlan wrote: True is that, look at Dyche at Burnley. Would have been easy to sack him after first relegation. They kept faith and he's going along quite nicely.

Managers can't be expected to produce perfection at the first time of asking.

Ironically, Moyes is being heavily linked with succeeding Lambert at Stoke, with The Sun reporting that the Potters view the Scot as the ideal man to get them out of the Championship.

The same old cycle is beginning yet again...