The Manchester Evening News says Old Trafford could be home to a permanent singing section at Manchester United games after the trial impressed the squad.
1400 United fans formed in L Stand during the Champions League tie against Real Sociedad to create noise in the stadium to bounce off the Stretford End and made their way through a full cycle of Reds songs.
The trial has impressed the players and managers, so much so that the club are planning to repeat it on February 9 for the match against Fulham in February.
United intend to put 2,600 seats aside - 1,200 more than the first trial - in what's commonly known as J Stand, plus a block of the adjacent K Stand at the east end of the ground.
It's also understood that the club will offer any displaced fans a voucher for food and drink as compensation.