He said: "I have been in England for five years and I have never seen a Liverpool side looking so strong in the League at this point of the season. Torres is doing really well and I am impressed with him.
"He can beat a player, he can create space, he can make time. He is making a great contribution to Liverpool's season."
Queiroz added: "I think he's a good finisher and he's a player who gives Liverpool something completely different. Certainly we will have to be careful of him because he is dangerous. 'We are always confident in what we can do and we will not worry too much. But we do recognise his quality."
Beneath the speculation over coach Rafael Benitez's future and the club's peculiar Champions League campaign, United have sensed improvement in Liverpool.
Queiroz said: "The current side have better balance than previous seasons, their consistency is much better and they have had some very good results. They are strong, well balanced, with good organisation and very good defensively, as always with Benitez.
"They also have players who are showing they have a lot of ability and skill. After everything Rafa has done for Liverpool he doesn't deserve to be under this kind of pressure. I've known him for a long time and he is a great coach and a great man.
"But I think the bad things of Continental football are arriving in England. It is really strange because in the last five years there has been a definite change.
"I don't know the exact data but there are definitely more coaches under pressure than at any other time I can remember. This is not a good thing. It is a bad thing."
