There's other veteran quarterbacks available that would cost less, carries less baggage, and brings nearly as much to the table as Kaepernick. One such QB is Kaep's own teammate that once beat him out for the position, Blaine Gabbert.
Once a top 10 pick, Gabbert isn't quite as much of a threat with his legs as Kaepernick is, but he's no slouch, either. As a matter of fact, his time in the 40, 4.62 at the combine, was close to Russell's 4.55, and Gabbert is a more accurate passer than Kaep (who isn't?). At 27 years old, Gabbert's 2 years younger than Kaep.
I'm not necessarily advocating that we bring in Gabbert. I'm pointing out that there are better options out there besides Kaepernick. Besides, we have enough distractions going on with the speculation about Richard Sherman, Boykin's arrest, and Russell's new lifestyle. The last thing we need is a pain in the ass like that POS.