The Court of Arbitration for Sport has rejected an attempt by Malaga to overturn a Uefa ban from next season's Europa League over previously unpaid debts.
At a hearing last Tuesday, Malaga challenged Uefa's decision in December to ban the Qatari-owned club from one European competition for missed payments of players' wages and social taxes.
Clubs must pay football and tax debts to retain a licence from their national association to play in Uefa competitions.
Malaga, who reached the Champions League quarter-finals this year, then finished sixth in the Spanish league to earn a Europa League spot. Seville are set to enter Europe's second-tier club competition in their place.