United got 3,100 tickets for the game, despite being entitled to 4,500 under competition rules.
At the time, a United spokesman said they had argued forcefully for more tickets.
The restriction was put in place due to safety issues, but neither Leeds United nor West Yorkshire Police have revealed what they are.
Reds Away made a Freedom of Information Act request to Leeds City Council and learnt that a meeting was held between officials from Leeds United, Manchester United, the police and the council at Elland Road on September 1, when the final decision was made.
But the council said they did not have minutes of the meeting because it was not held on their premises.
They suggested we ask Leeds United for them.
The club’s chief executive officer Shaun Harvey arranged the meetings, Reds Away emailed him and his secretary in early February and again in late February to request the minutes.
Neither have replied to date.
Reds Away then asked the council for a copy of the minutes, suggesting that the club should have circulated them to the council officer who attended.
In reply, a council spokesman said: “I can confirm that (the minutes are not in possession of the council).
“This is because the meeting in question was not one of the safety advisory group, but rather a
meeting between representatives of the two clubs to discuss ticket allocation.
“The council’s presence was, as such, a courtesy. If minutes of the meeting were taken, they were not circulated to the council afterwards.”
Reds Away editor Dale Haslam said: “This prompts concern for two reasons.
“First, if various authorities had concerns that could have put the safety of fans at risk, how are fans supposed to address them if no authority is prepared to discuss them publicly or, indeed, record meetings where vital safety issues are discussed?
“Second, United’s allocation was reduced by 1,300 due to these concerns and reds who pay upwards of £1,000 a year for their season ticket and automatic cup scheme membership, partly for the privilege of being able to apply for away games, are not getting value for money.”
“Authorities should do more to be transparent when it comes to issues related to the setting of ticket allocations.”