FWIW, buried within Ornstein's latest article for The Athletic is this tidbit:
Arsenal agree deal with PSG medic
The Athletic reported in June that Arsenal were working on a deal to recruit Brazilian medic Bruno Mazziotti from Paris Saint-Germain and it can now be revealed an agreement has been reached.
Mazziotti will join once the terms of his exit from PSG have been finalised, having left the French champions after their run to last season’s Champions League final. The 42-year-old arrives at Arsenal after head of physiotherapy Chris Morgan moved to Liverpool. It is not clear what job title Mazziotti is to take but he will work alongside head of medical Gary O’Driscoll.
Mazziotti has a close relationship with Arsenal’s technical director Edu after the pair worked together at top Brazilian club Corinthians and the Brazil national team.