The identity of those who have influenced Jesse Marsch, the soon-to-be Leeds United manager, may well sound a note of caution among the club's fanbase. Ralph Rangnick and Bob Bradley would not exactly be first in line for advice on how to crack the Premier League.
They have both been mentor and boss to the 48-year-old American, who makes no secret of their impact on the philosophies and practices he will bring with him to Elland Road.
Former USA coach Bradley, whose association with Marsch dates back to university soccer, was the first American to manage in the Premier League when appointed by Swansea in October 2016.