2. Barcelona: $3.56 Billion
One season after Barcelona won the treble of the La Liga, Copa del Rey and Champions League titles, they were unable to make a return to the Champions League Final. Barcelona will just have to deal with winning the La Liga title and making the Copa del Rey Final for the 2015-16 campaign. Barcelona may, before all is said and done, win the double, but the luster of those accomplishments could be somewhat lost if their hated rivals emerge victorious on the last day of the European season. Regardless of what happens before the end of May, Barcelona will continue to be one of the biggest clubs in the world for a long, long time.
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