
10. Barcelona (2020)
Barcelona is one of the most famous teams on the planet. The Catalan giants attract some of the best players in the world. Meanwhile, they enjoyed the services of Lionel Messi for almost two decades. But he departed after the club fell flat on their faces. The ineptitude behind the scenes was something remarkable. They lacked a coherent vision and struggled financially.

Fans still expected Barcelona to be competitive on the field but they felt apart. They flopped in the Champion’s League and failed to contend in La Liga. It was disappointing for their fans because they stuck with them through thick and thin. Meanwhile, Messi signaled his intention to leave after carrying the team for so long. This was a massive blow because of his status as an all-time great (via Sky Sports).