The football club has long been central to Catalan identity and is central to the region's independence vote.
Who will win?
Millions of dollars will be made by both sides from the fight but does boxing have more to lose than UFC in this big money head-to-head?
Joe Giddens/PA Wire/PA Images
Summer spending across English Premier League football clubs has been jaw-dropping.
Neymar looks to leave Barcelona.
Financial Fair Play rules require clubs' spending to match their earnings.
EPA/Fernando Bizerra Jr
It's all to do with PSG's Qatari owners.
Cricket Australia has been unable to broker a new pay deal with the Australian Cricketer’s Association.
Business Briefing: following the money in cricket.
The Conversation 17.7 MB (download)
Rather than just admiring a good hit or delivery, there’s another way to analyse what’s happening on a cricket pitch. Cricket players are actually business people, in the sense that they’re weighing up…
Esports has become big business.
Beyond the glitz and glamour of the esports arena there are some serious issues with how its economy works and how this affects player well-being.
Olympiakos dominate Greek football’s top flight.
Predictable results and unresolved corruption scandals are a serious issue for the future of the Greek game.
Stories of financial mismanagement in football have become all too common. Where is the outcry?
The game is changing.
Peter Byrne/PA Archive/PA Images
Is it time the Premier League developed an on-demand, Netflix-style football watching service?
Lots of ground staff are on minimum wage.
John Walton/PA Archive/PA Images
The wealth bonanza enjoyed by top flight football clubs does not trickle down to many of their employees.
Ecclestone made F1 the success it is today. But the sport needs rejuvenating if it's to continue to prosper.
The fight is on.
charnsitr / Shutterstock.com
As United and City go head-to-head in their first encounter of the football season, their rivalry reaches new levels on and off the pitch.
The boys are back in town: (from top left) Jose Mourinho, Antonio Conte, Jürgen Klopp and Pep Guardiola.
The egos have landed, and they're ready to rock.
Goal! But who would benefit from Brexit?
If there was a Brexit smaller clubs lower down the league structure would likely struggle to get the best talent.
Guangzhou Evergrande supporters cheer their team on at the 2015 Club World Cup.
Big name signings, inflated wages, high hopes of success – welcome to China's Super League.
The case of Bolton Wanderers is yet another example of how different football clubs are to normal companies – and why they rarely pass away into total, terminal, permanent death.
Is the NFL seeing a decline in popularity?
EPA/Eric S Lesser
The threat of millennial consumers to American football is no illusion.
The rebrand awaits.
Why Adidas pulled its sponsorship of the IAAF, the governing body of world athletics.
Formula 3 but what about Formula 1?
Bernie Ecclestone is wrong to think that women can't be taken seriously in Formula One.