Not sure I fully agree there
Rangers are a huge club fan base wise and even if they get spanked in the champions league qualifiers they will still have a europa campaign (or whatever that’s called these days).
You can end a career saying you’ve played European football - unlikely to be the case if you settle for a championship side.
Not saying the chance to challenge for promotion and possibly play in the PL isn’t a draw but I think you’re underselling the chance to play in Europe, in front of huge crowds and certainly end a career having won some silverware