Demps’ signing bonus brings the Patriots closer to the $76,585 maximum that teams could spend on signing bonuses for undrafted free agents in 2012. (New England currently is at $76,500.) In addition to the signing bonus, the Patriots have fully `guaranteed $200,000 of the $390,000 base salary Demps would earn if he makes the 53-man roster. If Demps does not make the team, he’d still get that money. The total of $211,000 in guaranteed money is the second-largest sum given to a 2012 undrafted free agent, exceeded only by the $214,000 the Dallas Cowboys guaranteed offensive lineman Ronald Leary.