By Chris Rosvoglou Free agent quarterback Colin Kaepernick has been making a strong push over the past few weeks to show that he still has what it takes to play in the NFL. On Friday night, Josina Anderson had an update on Kaepernick’s comeback attempt. Anderson is reporting that Kaepernick is willing to accept a backup role in order to get back on an NFL roster. “I‘m told Colin Kaepernick has informed others that he’s open to accepting even a back-up QB role–if* that’s what it takes–to facilitate a return to the NFL, per league source,” Anderson tweeted. Kaepernick has the chance to showcase …