Louis van Gaal believes it is Manchester United while Toni Kroos thinks Real Madrid - but which team do you think is the greatest in modern football?
New Manchester United boss Louis van Gaal claimed at his opening press conference that he had joined the biggest club in the world this summer, but an hour or so later midfielder Toni Kroos said the same thing at his Real Madrid unveiling.
Manchester United certainly have one of the most widespread fanbases on the planet but - on the back of finishing outside of a European spot in the Premier League last season - can they still be considered the biggest team around?
Bayern Munich's popularity, financial weight and star quality has rocketed in the past couple of years and they are widely considered to have one of the strongest squads, but does Real Madrid's destruction of them in the Champions League last season weaken any claims?
Speaking of Madrid, their rivals Barcelona can hardly be ignored when it comes to discussions about who is the top side on the globe, although their dominance domestically and continentally has waned in the past couple of campaigns.
AC Milan, Juventus and Inter will all undoubtedly believe that their historical prestige gives them the upper hand, but Serie A is not quite the same beast it once once.
Paris Saint-Germain, Monaco and Manchester City do not have the same history as the aforementioned Italian giants - and even Arsenal, Tottenham and Chelsea only have one Champions League win between them - but do their overflowing bank accounts work in their favour.
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