I have a theory about this that goes beyond Spurs, and it's that the Premier League has so much money and therefore quality even at the bottom of the table, that it's extremely hard to compete in the Champions League and stay high up the table unless you are both well-run and have nation-state money. This year that's basically only Man City, and it strikes me as not a coincidence that the Big 6 clubs struggling the most this year(Liverpool, Chelsea, Spurs) are the ones who had to gear up for a bunch of midweek Champions League games they couldn't rotate for. Each of those teams have their own unique issues too, and the winter world cup certainly plays some role(even if teams didn't have a bunch of WC players the fixture congestion/injury risk surrounding it matters), so I'm curious how much that pattern holds next year too with a completely different set of teams joining City in UCL.