United want to generate a better atmosphere at home games and have asked 1,500 supporters to sit in the area normally reserved for the away contingent.
An anticipated 6,000 following from Spain has created the space for an initiative being spearheaded by various fans' groups and given official sanction by the club.
"For the big games, the atmosphere at Old Trafford is up there with the best of them but, as with most grounds, that is not the same for the lesser matches," Andrew Kilduff told the Daily Star.
Kilduff is co-founder of Stretford End Flags, which has been responsible for the distinctive banners in the stadium.
"The problem is not lack of singing but more that, because of the size of the stadium and the acoustics within it, the sound doesn't travel.
"You can have fans in different parts of the stadium singing different songs at the same time and none of them really being heard.
"The idea is to have an area of the ground where like-minded fans can be in the same place and, generally speaking, make some noise."
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