I hope they won't work out a plea agreement. Asking less than a life sentence is like putting a seal on his mouth forever, he would handle 15-20 years, especially with the possibility of parole. So we would never know who did what in the Philadelphia mob in the last 20 years.
That's why I don't hate criminals with weak personalities who are quick to inform. If everybody was a "tough, stand-up" guy, the mafia books we are reading would be thinner than a child's school copybook because of lack of information.
By the way, what's Nicodemo's reputation? If you had to bet money, will he talk if sentenced to life or not?