He’s nuts! As a fullback he was making it into the national side ffs - as a midfielder he barely scraped interest from West Brom on loan (and even then his manager said he should go back to Arsenal and play whatever role he was given). Really think he’s shot himself in the foot with that Insta post - whatever his grievance with Arteta, any potential buyer will take a really dim view of that. It’s like some unspoken code between clubs - a line you don’t cross.