Garth Brooks got his 2014 comeback off to a historic start, but now the threat of legal action may overshadow that career triumph.

Garthmania swept through Dublin, Ireland recently, as Brooks sold out five back-to-back shows as part of his Comeback Special at Croke Park. The superstar has sold a total of 400,000 tickets to the five shows, which are slated run from July 25-29, 2014.

But while the shows are projected to bring €100m in revenue to the economy, not everyone in Dublin is happy with the news. According to the Evening Herald, a group of residents are now threatening a High Court injunction if licenses are granted for the concerts.

At a heated meeting on Wednesday (Feb. 12), the GAA -- which oversees Croke Park -- concert organizers Aiken Promotions and local residents faced off over a written agreement from 2009, which stated that the stadium would host no more than three concerts per year.

Stadium Director Peter McKenna reportedly told the assembled residents that "times move on," causing an uproar. Representatives for Croke Park argued the financial benefits of the shows, pointing out that people have purchased tickets from as far away as Afghanistan, and two jumbo jets full of tourists will arrive in Dublin for the performances.

Tickets to the five Garth Brooks concerts were sold subject to license. Promoters have 10 weeks to apply for a license before the first scheduled gig, and local residents will then have five weeks to protest.

Eamon O'Brien, chairman of the Croke Park Streets Committee, pointed out that the Dublin City Council has only refused one application from Croke Park in the past 30 years.

Garth Brooks has not commented publicly on the matter.