Marcelo Bielsa says he is "very worried" about Leeds United's poor form, but insists he will not walk out on the club mid-season.
The Whites are three points above the drop zone after four defeats from five Premier League games.
They have also conceded the most goals in the league, but Bielsa says a more defensive approach is "not an option."
"The style, the model has already shown that it can work in the Premier League," said the 66-year-old.
"The effort and the willingness of the team can't be judged or doubted because they have been the most intense team in their performance in the Premier League across two years.