The tiny Basque club have secured a spot in Spain's top flight next term but must still meet financial requirements if they are to be allowed to compete in 2014-15
The Basque minnows maintained their slender lead over Deportivo la Coruna at the top of the table with a 1-0 win over Deportivo Alaves and a home defeat for Las Palmas means they now hold an unassailable seven-point advantage over the sides outside the two automatic promotion places.
Eibar, who have now secured two-straight promotions having only gained reached the Segunda at the end of last season, will now play in Spain's top flight for the first time in their history - provided they can meet the financial requirements of the division.
Despite being a debt-free club, Eibar boast a stadium capacity of just a fraction over 5,000 and are struggling to reach the required level of share capital which would allow them to compete alongside the likes of Barcelona, Real Madrid and Atletico Madrid.
Spain international Xabi Alonso - along with Madrid team-mate Asier Illarramendi - have been supporting a campaign aimed at helping to raise €1.7 million in bought shares which Eibar need to have secured by August 6 this year.
"It is contradictory that a club who has an enviable financial health and with zero debts is obliged to do this, when there are others who have much deeper problems. I hope we can put in a big push to keep them where they deserve to be," said Alonso, who spent time on loan at the club in the 2000-01 season.
Club president Alex Aranzabal admitted earlier this year that "the clock is ticking" if his side is to secure the necessary funds to avoid being forced back down into the Segunda Division B next term.
"Eibar has, in these moments, two great challenges to take on. One is on the pitch, one off it," he said before his side sealed promotion.
"For a while people have been talking about Eibar as a model of good sporting and above all, financial management. But the clock is ticking now.”