Why does it have to be at a top club though?
By the same logic, why didn't Alexis insist on continuing the journey at Barcelona or Mandzukic at Bayern or Dzeko at City or the many other cases where players take a step down when they weren't first choice or their club signs someone to start in their position?
This is a guy that has started 50 PL games from the bench when for the most part he was our only legitimate striker and it's not like any of those appearances were when he was a 17 year old desperate to get 5 minutes at the end of a game.
I can't complain if he wants to come on for the last 15 minutes and be a target as a career choice but I can't understand a player who's happy to not play. He started 11 games in the league last year despite being fit for practically all of them and that was only because Alexis was repositioned.
Most players coming off of a season like that should be looking to leave. I would be surprised if he made as many starts next year unless Wenger is going to try and go for some kind of two striker setup.