Little known fact: When Beyonce sang, "I'll have another you by tomorrow, so don't you ever for a second get to thinking you're irreplaceable," she wasn't talking about Lionel Messi or Virgil van Dijk or anyone else on this list for that matter.
With what promises to be a busy summer transfer window, we decided to take a look at the "Mr. Indispensable" at 12 of the best (or biggest) clubs in the world. Who are the guys that make the biggest impact for their sides when they're on the field?
