Inter Milan president Massimo Moratti insists the club have no plans to get the chequebook out this month despite claiming just one point from their two Serie A games so far in 2009.
Sunday's 3-1 defeat at Atalanta, which followed a 1-1 draw against Cagliari the previous weekend, saw Inter's lead at the summit cut to three points at the halfway stage of the season.
But Moratti and coach Jose Mourinho do not intend to dip into the January transfer market in a bid to turn the tide.
"It's absurd to say that we need to make a move in the winter transfer market," said Moratti. "We will not make a move because we have an ample squad and I trust my players."
Moratti was unimpressed with his team's performance at Atalanta, where Mourinho's men were down 3-0 after 33 minutes. Their sole response came late on through Sweden striker Zlatan Ibrahimovic.
However, the Nerazzurro supremo hopes the slip will prove to be only a minor hiccup.
"Yesterday's game was a terrible game for us," he said.
"The team played badly and the only positive note was Adriano's return to play.
"Everyone is at fault - not one individual.
"But I hope the team will bounce back as soon as possible."
Mourinho admitted his side were "terrible" in Bergamo and accused them of conceding goals in a "ridiculous manner".
"Our approach was completely wrong and I don't know why," said the Portuguese.
"We didn't have the right mentality going into the game.
"This game was our worst of the entire season. Against Atalanta, my team were terrible."
Sergio Floccari gave Atalanta an 18th-minute lead before two goals in 15 minutes from Cristiano Doni all but settled the outcome and gave the hosts their first win over Inter in almost 15 years.
"I cannot comment on my team's performance in the opening 30 minutes," said Mourinho.
"They (Atalanta) took four shots on goal and scored three times, but those goals we gave away in a ridiculous manner.
"You end up paying for mistakes."
Mourinho, whose side have lost just twice in Serie A this season, acknowledged he and his players deserved all the criticism directed at them.
"As coach I take full responsibility," he added.
"I need to be silent and all of the sporting press can use any type of adjective they want to describe our performance and I will accept it.
"We have to accept all the criticism."
Despite the sluggish start since the resumption of Serie A following the Christmas break, Mourinho defended Inter's overall record and claimed the other teams in the top flight would gladly swap positions with the league leaders.
"I can only say that 19 teams would be very happy to be in the position that Inter are in," said Mourinho.
Inter host Sampdoria this weekend while Juve entertain Fiorentina.