Catalonia will push the Spanish government for a new agreement on holding a binding referendum on the region's potential independence that would be recognised both by Spain and the international community, its separatist leader said on Tuesday.
The Spanish government, however, rejected the proposal.
"They have those maximalist aspirations, which are absolutely not shared by the government," spokesperson Isabel Rodriguez told reporters.
But both governments would keep talking to "normalize" their relationship, she said.
The so-called "clarity agreement" proposal comes shortly before the fifth anniversary of Catalonia's unauthorized independence referendum and at a critical time for its separatist movement, which is marred by divisions between moderates and radicals that have threatened to fracture the coalition government.
Spain's Socialist Prime Minister Pedro Sanchez has favoured dialogue with Catalonia to rebuild relations after a chaotic unilateral bid for independence in 2017 plunged Spain into its worst political crisis in years.
It remains, however, staunchly opposed to independence and has hitherto ruled out a legal referendum. The Spanish constitution blocks the country's break up but some scholars and Catalan separatists argue there could be legal room for a vote if the Spanish government agrees.
A similar proposal by Catalonia in 2012 was firmly rejected by the then conservative government in Madrid. The wealthy northeastern region held a referendum five years later despite a ban by the courts, and issued a short-lived unilateral independence declaration.
Catalan government head Pere Aragones told the regional parliament that for another referendum, Catalonia needed Madrid's buy-in.
"I have no doubt this is the fastest and most efficient way to hold another vote because it originates from the lessons learned from 2017 and overcomes the difficulties that did not allow us to implement the result five years ago," he said.
He called his proposal the "most inclusive, democratic and explainable to the international community", and said he would seek the support of all Catalonia's political actors.
Aragones has engaged in talks with Madrid and his party, Esquerra Republicana de Catalunya, has frequently lent its votes to the socialist-led minority government in congress.
Around 52% of Catalans oppose independence and 41% back it, according to a June poll.
