Tottenham manager Antonio Conte believes he needs at least two more transfer windows to be in contention for the Premier League title.
Spurs are level with champions Manchester City in the top flight on 10 points after winning three of their first four games.
Conte has made minimal changes to his starting XI so far but believes Spurs can still strengthen in key areas.
“Compared to last season we are more complete,” said the Italian.
“But to get other teams at the top level, we need time, patience and transfer markets, at least two transfer markets, to reach the same level.”
Harry Kane scored twice and, like Tottenham, had saved a penalty defeated Nottingham Forest 2-0 at the City Ground on Sunday to remain undefeated.
They travel to the London Stadium to take on West Ham on Wednesday at 19:45 BST.
Conte has spoken to the club’s board of directors about hiring new recruits before Thursday’s deadline, but said: “If we do something or not, it’s fine.”
With Spurs starting their Champions League campaign next month, Conte says he will find out how his side can cope with a busy schedule leading up to the World Cup break in November and December.
“Now when you have to play a game every three days it’s normal that you take turns, the players have to be smart to understand that sometimes they have to go to the bench, come in and take turns,” he said.
“And that’s the period in which the club can understand whether we are really, really complete in the squad or whether we could do better.”
Kane has scored four goals in three games this season and has two years left on his Spurs contract.
While Conte said there was no news on the England captain’s contract situation, he stressed that the club are keen to keep the 29-year-old forward.
“We are talking about an important player for Tottenham and the wish of everyone at the club is [for him] to stay at Tottenham and sign a new contract,” he added.