The SPFL withdrew more than 5,000 tickets from Aberdeen after they failed to sell enough for the Betfred Cup semi-final against Rangers.
The club had been handed over more than 20,000 for the Hampden clash, but with less than 9,000 sold the assignment was reduced to less than 15,000, with tickets being sold to Rangers fans before the game.
Comes after a row between the club and the governing body on how the tickets were sold with empty seats provided at the national stadium for the game.
The Rangers will now have another 3,500 tickets for the clash with tickets expected in Hampden by the end of the day and sold to supporters of Ibrox in the coming days.
A statement from Aberdeen said: "Just over a week after the end of the Betfred Cup semi-final against Rangers at Hampden Park, over 9,000 tickets have been sold to The Red Army.
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"Despite the strong initial sales, particularly of our supporters' clubs, overall ticket sales for the game were not at the height of expected demand.
"Given the current sales figures, with the SPFL having registered less than 100 sold today by Aberdeen FC, the SPFL has now withdrawn some sections of the East Stand. In return, the SPFL will release to the club a further seat allocation in South Stand's Upper Stand and Lower Tickets, this will require the transfer of some fans to alternate seats and the club will be in touch with any interested fans to finalize the arrangements.
"With 5,500 tickets still available to our supporters and access to a further allocation if we show an additional demand in the coming days, attention now focuses quickly on building the tickets that have been sold for satisfy the rest of our allocation and ensure that the team walks towards a wall of noise from the supporters of Dons present.
"Now we have to play our part in building on this current sales figure to ensure we have fantastic support at Hampden next Sunday.
"There's still time for you to make a difference."
The Rangers confirmed later on Thursday that the SPFL had informed the club that they would receive an extra award.
A statement said: "We have been informed by the SPFL that we will receive a further allocation of tickets to the Betfred Cup semi-final against Aberdeen on Sunday 28 October 2018.
"It is expected that these tickets will be received tomorrow (Friday) and, once the number has been confirmed, we will decide how to assign these tickets with previously unsuccessful subscribers on the continuous credit card scheme with priority.