Tottenham boss Harry Redknapp sees Liverpool as the most vulnerable of the current top four.
Liverpool and boss Rafa Benitez were eliminated from Europe's top competition on Tuesday.
And Redknapp, whose team beat the Reds on the opening day, told the Daily Express: "You look at the way the league is panning out and there is possibly one position going spare in that top four.
"Manchester United and Chelsea are not going to be shifted from there, certainly not in the short term. You've got to fancy Arsenal a bit as they've turned a few heads, are playing well and looking good. But I really don't think we are far away from them.
"Behind them you've got Liverpool and a group of three or four others, and we're right at the head of it. We'll be there, pushing all the way. The real thing is that we must believe that we are good enough because, trust me, we are."