This looks great, if it stays even a little bit to the original book(Coogan's Trade by Higgins) it should be a good show and Pitt is always a solid performer. I find him to be in the workman class of actors, not always great, but not bad either.
Higgins's also wrote "The Friends of Eddie Coyle" which was turned into a Mitchum film in the 70's, also a good watch. If you like Scorsese style crime films, you will like his work.