CFB's 5 most irreplaceable players

With the loss of Derrick Henry, Alabama has to replace a running back who set the conference record for most rushing yards in a season (2,219), most rushing TDs in a season (28) and most consecutive games with a rushing TD (20). Good luck with that. Matt Kartozian/USA TODAY Sports

A record number of college players declared early for the 2016 NFL draft. Any personnel loss of this caliber has the capacity to damage a team, but not all of these departures are created equal. Some of these players will be replaceable for a number of reasons, while others will be very difficult or even impossible to replace.

Here is a look at players who are nearly impossible to replace. This is not meant as a knock on those attempting to fill these shoes, but rather to note that the performance bar that has been set would be difficult for anyone to clear.