When the Arizona Cardinals signed third-round pick Tyrann Mathieu on Thursday, there was much speculation that the four-year contract would include stipulations based on Mathieu's history of failed drug tests at LSU (Mathieu reportedly told NFL teams during the draft evaluation process that the number of failed tests was in the double digits). That speculation was partly based on a report that came out shortly after the draft indicating that Mathieu would receive no guaranteed money or signing bonus but instead would have to earn his bonuses by successfully passing drug tests and staying on the roster. His agent, Pat Lawlor, strongly denied that report. As it turned out, Mathieu did in fact receive a $265,000 signing bonus as part of his deal, an amount much smaller than the slotted bonus figure of $662,500 based on where he was drafted at No. 69 overall. However, NFL.com reported Friday that Mathieu can earn the rest of the slotted figure — that's an additional $397,500 — over the remaining three years of his contract in the form of roster bonuses, which of course would only be paid if Mathieu were able to stay clean and remain with the team.