Seen this a couple of times now, surely Real Madrid is the biggest club in the world.
What's your definition on biggest? Real Madrid are a better side. Man United are the most valuable club with the most fans, or "fans" before someone tries to be funny.
Taking "everything" into consideration. Quality of the squad, reputation, value, stadium, fan base...
Aye well then Man United are bigger.
Real have a better squad, higher reputation, bigger stadium. And do Man U really have more fans worldwide? Sounds strange to me.