Chelsea are one of the most widely resented teams in the world.

Former manager Jose Mourinho was seemingly always the subject of controversy or conversation throughout his tenure at Stamford Bridge, but even before his era Chelsea were universally despised.

Chelsea has a long history of winning, and the way in which the West Londoners have recently achieved it is subject to criticism.

Roman Abramovic, arrived to Stamford Bridge in 2003 and has bought his way to success ever since. The Blues have won four of the past 11 league titles.

But whether it is the team's abrasive managers, punk-ish players or sustained success, football fans have found plenty of arguments toward hating the Blues.

These are the top 10 reasons...

Excess of loans

Many condemn Chelsea for their contrived way of winning. Abramovich's riches have brought Chelsea success because of the world-class players to which he appeals.

In fact, 28 players were on loan for Chelsea this year, with a staggering combined worth of £150million. Chelsea's middling finish in the Premier League this season showed that Abramovich's strategy isn't foolproof, much to the delight of the club's critics.

Dirty players

Abramovich has invested in world-class players, and many have a history of dirty play.

Diego Costa is the first who comes to mind. The Spaniard's malicious tactics, most notably stepping on defenders, have cast a poor public perception on the talented striker.

Longtime captain John Terry is a much more toned down version of the abrasive Costa, but he has had his fair shares of skirmishes on the pitch.

Former striker Didier Drogba was another star whose play borderlined on dirty. Malice is one of the targets in the pro-hatred argument for Chelsea, and there is plenty of evidence.

Rich area of London

Chelsea's wealth is accentuated because of the team's location. The West Londoners are home to one of the richest areas in the city, as the median property price in Chelsea is more than £1million.

Throughout the years, the football club has scorned other local teams with fewer resources, including Fulham and QPR.

Mourinho era

Jose Mourinho's antics on the touchline, abrasiveness toward the media and self-proclaimed nicknames casted him in a negative light.

Nonetheless, he won a Premier League title in one of his two full seasons at Stamford Bridge. He was sacked this year after an anaemic start to the season.

His successor, former Juventus manager Antonio Conte, is every bit as rambunctious. Conte's coaching style is noticeably hands-on— he often stands for the entirety of games, pointing and shouting to his players.

Whether fans will hate Conte the way they did Mourinho is unknown, but managing a universally recognised club comes with its territory.

Part of the original 'big four'

The coveted big four was comprised of Chelsea, Arsenal, Manchester United and Liverpool.

The quartet dominated the Premier League in the '00s, causing concern that the league was watered down and too top-heavy.

The 2004-05 season started Chelsea's reign as co-titans of the Premier League.

For several years, smaller clubs struggled to compete for the title, an issue that is slowly dissolving, as evidenced by Leicester City's triumphant 2015-16 campaign.

Ownership

If a Russian billionaire owns an iconic English football club, people will surely take notice.

Roman Abramovich is one of the wealthiest 200 people in the world, and his road to riches can create resentment.

A college dropout, Abramovich cashed in on massive oil export deals that created some skepticism. Now, the Russian Oligarch has more than $8billion to his name.

Throughout the years, he has watched games from his resplendent press box with his beautiful wives beside him. It's hard not to be jealous.

Recent winning history

This season's result of 12 wins and 12 losses was an aberration from Chelsea's usual triumphant ways.

The Blues have won four of the last 11 Premier League titles, second most behind Manchester United in that time.

In the last 12 seasons, Chelsea have finished in the top three in all but two occasions. They have found success by acquiring expensive, world-class players, a formula leading to jealousy and resentment from supporters of other squads.