Welcome to ESPN's Insider Notebook, featuring contributions from our reporters across the top leagues around the world.
In this edition, there's the latest on Arsenal's investigation into their record £72 million signing. Plus: Barcelona start their search for a new boss.
Jump to: Barca hunt for new boss | Mourinho and Levy's transfer market battle | Big interest in ex-Barca rookie | Ceballos' Real return | Man United's plan to stop Europa boredom | MLS new boys need a spot for Dominguez
Arsenal investigate £72m Pepe transfer
Arsenal's efforts to streamline and improve their operations has extended to an internal investigation into whether they overpaid for £72m club-record signing Nicolas Pepe.