1. Wide receiver depth
The Bears have a wide variety of depth at the wide receiver position. The Bears have their proven starting talent in Allen Robinson, Anthony Miller, and newly-signed Ted Ginn Jr. They also have their young, unproven talent in Riley Ridley, Javon Wims, Darnell Mooney, and an array of players vying for a spot on the team.
If Patterson takes up a wide receiver spot, it is unlikely that the Bears will keep seven wide receivers along with these six names. That would mean Ginn, Ridley, and Wims would likely be on the chopping block. Mooney is almost a guarantee to make the roster since he was just drafted. Robinson and Miller are both slated to start.
It would be hard to cut one of those three players because all three provide extremely solid depth behind two or potentially three starters that have an injury history. Wims is the likely cut candidate, but he could be extremely solid in relief of Robinson. His ability to win jump balls is very intriguing.
All in all, Patterson would be better off listed as a running back so that these unproven guys have an opportunity to make a name for themselves.