Liverpool boss Jurgen Klopp believes a shift in the dominance of the Premier League is now happening.
Klopp discussed the previous five-years of Liverpool and Man City dominance ahead of a clash with Brighton in the FA Cup.
He told reporters: "What happened in the league with City and us in the last few years was absolutely exceptional. It is a bit embarrassing to say but the level of consistency we showed in that period is crazy. Absolutely crazy. But we don't use that even one percent as an excuse to say 'five years we have been in charge of football, now we have to watch it like this'.
"Consistency is really the most difficult thing to have in football and we will see how that goes for other teams when they have little drops or injuries. But it's pretty likely it'll get tougher for everybody up there to stay up there, to qualify for Europe, the Champions League and especially become champions.
“It will be absolutely difficult because of the quality of the teams, the money around and the quality of the coaches which has improved a lot as well. Arsenal are a sensational team. Mikel had time pretty much with just a little bit of European football in the last few years and he is doing an outstanding job.
"They will not go away easily and say 'we had a year, thank you very much'. United is in a really good moment, whatever happens there they will not stop investing and improving. If City, theoretically, do not win the league, I do not think Pep will accept this kind of situation for a couple of years. They will go again.
"Tottenham, Newcastle, Brighton are doing really well. We have to see how long Brighton can keep that team together. We know these kinds of things could happen, so it makes it really interesting."