10. Principles
Many believe that if Kaepernick came back to the NFL, he’d have to tone down his rhetoric and reactions. That would definitely go against his principles. You can bet that NFL owners would attempt to assert their dominance over him by warning him what is acceptable and not acceptable at their teams.

Kaepernick is not going to allow anybody to tell him what he can’t do. This is one of the biggest issues preventing him from returning because he’s going to continue drawing attention to himself. Is he wrong to do so? No, that’s entirely his choice under the first amendment. But it’s not going to make it easier for him to find a job.