"The [complimentary] ticket allocation, he started selling them with other players there, to make extra money," Nicholls' father says.
"The ticket allocation is something I do have a gripe about," the Republic of Ireland manager said.
Instead, ticket allocation was carried out through a simple lottery, reinforcing the fact that there was no preferential treatment.
One of the most fervently supported clubs in Europe did not sell their ticket allocation for the match.
Northampton are said to have returned all but 600 of their 3,5000 ticket allocation (if so, they were a noisy 600).
Stuart McCall has accused Motherwell of putting another dent in Scottish football's image after they cut Rangers' ticket allocation for Sunday's Premiership play-off final second leg.
O'Neill's misgivings over a disproportionate ticket allocation, with Ireland officially given 4,604 tickets for the 59,000-capacity stadium, proved unfounded.
Their vociferous support stretched way beyond the official ticket allocation, a matter that will cause embarrassment within the Scottish Football Association's hierarchy.
European football's governing body has also indicated that Liverpool's ticket allocation will be increased in the event of Sevilla not taking up their full entitlement.
Prestige Ticketing says its tickets are "the best available" and the experience will be unmatchable.Locog says the premium ticket allocation is across a range of price points.
The Dons' failure to sell out their ticket allocation left the 32,000-strong Ibroutnumberingoutnumbering Aberdeen fans three to one.
