I'd say 2010-2022 (it was a steady progression to promotion in 2014 though) and a European semifinal and finishing 8th is hardly incompetence so you're left with a disastrous 2022/23 and bouncing straight back along with the FFP. It's worth considering how we, as fans, would have felt had we not invested in transfers and wages over the years leading up to this, we're hardly alone in the FFP boat.