Louis van Gaal said Manchester United do not need a striker and will only buy one if he is the best in the world.
The United manager professed himself happy with the forwards in his squad, despite seeing his side only score twice -- with an own goal and a deflection -- in their first three league games.
But Van Gaal is content to carry on with Wayne Rooney, Javier Hernandez, Marouane Fellaini, James Wilson and Adnan Januzaj as his main attackers.
"I have a lot of options," Van Gaal said. "I have chosen Chicharito [Hernandez], because he is another type from Rooney, and we have also Fellaini, who is another type, then I have Wilson and Januzaj, so I don't think we need a striker.
"If he is the best striker in the world then, yes, we need him, but if he cannot contribute in our eyes, then we won't buy any striker. But when he does, we shall buy."
And Van Gaal admitted that, even if he finds one of the top strikers in global football, there is no guarantee he will succeed.
United signed record buy Angel Di Maria for £59.7 million and the previously-prolific Radamel Falcao in the final weeks of last summer's transfer window but neither lived up to his reputation at Old Trafford.
"In a club like Manchester United, you never know that, because you have seen it for example with Falcao and Di Maria last season: great players, but they have to adapt to the culture of Manchester United," Van Gaal said. "You have that with every buy."
Captain Rooney has gone 10 United games without a goal, but his manager insisted he was content with his performances.
"He has to do what the striker has to do in our system and he does that, so I am very satisfied with him," added Van Gaal.
United have not conceded in their first three Premier League games and Van Gaal is pleased with how his defence of Matteo Darmian, Chris Smalling, Daley Blind and Luke Shaw are performing.
"It's a new back-four because Darmian is new, Smalling looks that he is new, Blind is new in that position and Shaw is also new, because last season he didn't play so much," he explained.
"But we have started already from the first training session trying this back-four, only [the injured Phil] Jones has participated also, so we did it a lot of times and I am very happy how they have performed, that's true."