Richard Arnold is an accountant who has been at the club since 2007 and is Ed Woodward’s friend from their time at the University of Bristol.
Him replacing Ed Woodward means absolutely nothing to the way the club is run, because they replaced one (accountant) CEO with another (accountant) CEO who is a friend of his.
Murtough has been at the club since 2013. He came in with David Moyes. He doesn’t have anything to boast about since 2013.
Fletcher does not have any previous experience as a technical director, so we don’t really know how he will pan out.
Ragnick stated he doesn’t even know what Fletcher’s role at the club is. Speaking of Ragnick, he said (or implied) in his press conference that he hasn’t even been consulted about who the new manager should be.