Spurs now face a battle to keep hold of their spot in the top four after a disastrous run of three defeats in four games.
In title contention prior to the 2-1 defeat at Burnley one month ago, the Lilywhites are now just a single point ahead of Arsenal in fourth with eight games of the season remaining.
Manchester United and Chelsea will also fancy their chances of finishing in the Champions League spots come May, especially with Spurs having to travel to Liverpool and Man City over the coming weeks.
Having done so well to be up towards the top of the league having not signed a single player this season, Hugo Lloris has claimed it will be "very difficult to take a step up" if the club once again go without when the summer transfer window slams shut.
"There are top quality players in our squad who could play for any club in the world and who train every day to win," the goalkeeper told L'Equipe via ESPN. "But there is the risk that they run out of steam.
"We all now need to feel the ambition of the club at every level.
"I love the club; I love the people here. Winning something here would have a sense.
"I can see the difference between the state of the club when I arrived and today.
"We manage to be very competitive with a completely different philosophy to our rivals.
"To give us even more credit, we have to win something.
"We're going to have one of the most beautiful stadiums in the world, and that's great, but we have to accompany that progression: I think it will be very difficult to take a step up without recruiting."
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