Liverpool have made three changes behind the scenes that could be key to them increasing their £272m annual commercial income in years to come. It is a summer of transition for Liverpool in nearly every department. The headline appointment is Arne Slot as manager, but Liverpool are ringing the changes elsewhere too. Michael Edwards has returned to replace Mike Gordon as the club’s CEO, while Richard Hughes has joined as sporting director as the Reds transition away from Jurgen Klopp’s structure. Now, as relayed by Sports Pro, Liverpool have made a trio of alterations in less glamorous but stil…