Trusting John is like trusting Mitch or Dorian, turning your back on a shark or a rabid dog. John doesn't care who gets hurt, as long as he gets his man and another medal. I just hope John's scheme doesn't get Bobby hurt! I wouldn't trust John at all. Does Bobby know he's a crooked cop with more crimes behind him than most of the bad guys in town? That he kills without a conscience? Assaults people at will? Abuses his badge? John's not much better then Eli. Both are arrogant and full of themselves. Both think they've done nothing wrong. Both don't care who gets hurt, as long as they get what they want.
Guess he doesn't know how Cole and John got Starr and Hope kidnapped and almost killed last time someone went "undercover" for John, only this time Cit was Cole trying to keep his heiny out of jail and being willing to risk his family, rather than someone trying to put a bad guy away.