Mauricio Pochettino admits Tottenham may leave it late again if they are to make signings in the January transfer window.
Spurs have limited funds available after spending close to £70m on Moussa Sissoko, Victor Wanyama, Vincent Janssen and Georges-Kevin Nkoudou last summer.
Sissoko, who cost the club a joint-record £30m, was signed on deadline day as the club tried to negotiate a cheaper price with Newcastle.
Tottenham are unlikely to be busy in January but Pochettino believes any deals are again likely to emerge later on in the window.
"Maybe on the last day, maybe. It's like before," Pochettino said.
"It's too difficult to improve your squad in January, for all the clubs. I don't expect too much movement.
"I am happy with the squad. At the same time I recognise it is always very difficult to improve the squad in January.
"The best players, it is difficult for their teams to allow the good players to leave halfway through the season.
"If some special situation happens, maybe we need to be open but it will be tough or difficult to improve the squad in that period."
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Tottenham are still monitoring Wilfried Zaha at Crystal Palace, after making an opening offer worth £15m in August.
The club are waiting to see how Zaha figures in the plans of new Palace manager Sam Allardyce but Pochettino admits he is a fan of the 24-year-old.
"I like good players and maybe he is a good player," Pochettino said. "But I don't like to start focusing on some names. Then you start a rumour."
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