Is there anything in the rules that would prevent the Patriots from hiring Troy Brown as an Assistant Coach of some sort with the wink/nod/understanding that he could possibly be added to the active player roster (later in the season in case of need)? In this way, he could be actively involved with the team until they needed to activate him of the shadow roster to fill in for possible WR/DB injuries. What other ways can players on the so-called "shadow" roster stay legally involved with the team without being involved on the player roster? For instance, QB Vine T. was at the passing camp this past week. How can he stay involved with the Pats until he is actually added to the active roster? What are the limits on such a player just showing up for practice/camp despite not being under contract? ANyone have any ideas?