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"The movement between the strikers is good, there is greater harmony between them and everything looks better.
"We needed to adapt, that is why we took the decision to play with three forwards. The problem with 4-4-2 is that is can quickly become 4-2-4 and at the top level, that system does not exist anymore.
"From a negative point of view, last season was exceptional," said Queiroz. "The first thing we had to go was to recognise what happened was not normal.
"At this point last season we had an entire team out injured. In that sense Ruud van Nistelrooy has been our best signing.
"We knew Wayne Rooney would develop, as well as Cristiano Ronaldo and Kieran Richardson, so it was just a matter of retaining our confidence and placing trust in the people we had with us."