Tottenham Hotspur are the only team in the Premier League not to make a new signing this summer.
Tottenham have become genuine title contenders over the past two season, running both Leicester City and Chelsea close.
The Lilywhites now seem to have consolidated their position as a top four club – but Pochettino is striving for better.
Tottenham arguably have the most talented starting line-up of any team in England.
However, Spurs are yet to make a signing so far this summer, which has caused some concern.
Tottenham’s title rivals have all strengthened, but Pochettino’s men have stood still.
And Pochettino insists that new additions will be made, as he simply cannot afford to risk not bringing in new players to provide competition.
“We understand that Alli, Kane, Eriksen, Dier, (Toby) Alderweireld are really good players,” Pochettino said.
“They want to win, like us. But it’s true that they need to feel the pressure a little bit to improve in every season.
“Every season we need to be clever in how we bring more energy and make sure our main players are not in a comfortable situation. Because if they are it is normal in human beings… if I’m Dele Alli and look back and there’s no one for competition, if I make one run or two runs it’s the same because I always play.
“When the players start to feel that — if the team starts to feel that — it’s difficult to win.”
Tottenham’s pre-season has seen them beat PSG, but they were also out performed by Manchester City in their most recent friendly match.
Spurs face Juventus in their final non-competitive contest, before they take on Newcastle United on the opening weekend of the Premier League season.
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