Mauricio Pochettino fears Tottenham will not be able to challenge for the Premier League title unless he makes signings, The Guardian reports.
Last season’s runners up are the only top-flight club not to have made a signing so far this summer.
The Guardian reports that Spurs boss Pochettino believes new faces are needed to force Harry Kane, Dele Alli and other key players to raise their games.
“Right, now we need to win some trophies, no?” he said.
“That is good, the pressure. I think it’s important to understand now that we need to be clever how we manage the expectation and how we need to put pressure on our own players.
“We understand that Dele Alli, Harry Kane, Christian Eriksen, [Eric] Dier, [Toby] Alderweireld are really good players. They want to win but need to feel the pressure a little bit to improve every season.
“If there’s no competition in behind it’s normal to drop your motivation, it’s normal to drop everything that you do. And then it’s difficult to win.
“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 not it is normal in human beings,” Pochettino said.
“If some players arrive with different energy then it’s: ‘OK, come on, we need to push, we need to run, we need to do the same.’ That is the risk we will have in the future if we only keep 11 players.”