The European Union, according to Enric Folch, the global secretary of the Catalan Solidarity for Independence coalition, would be the choice of "common sense" since Catalonia and Spain are now members of the eurozone, and independence would remove Catalonia from its membership.
But an eventual break from Spain would leave Catalonia outside the European Union and the consumer protections it offers - a source of uncertainty and fear in the minds of some depositors.
People were visibly disappointed when Puigdemont announced the suspension of the declaration of independence.
Catalonia leader Carles Puigdemont will not respond to the Spanish government's request to clarify what the declaration of independence signed Tuesday evening by regional authorities actually means, said Rasson, quoted by TASS.
The Catalan parliament may unilaterally declare independence as soon as Tuesday following the banned referendum last Monday October 1, which a majority of voters boycotted but that Catalan leaders say produced an "overwhelming majority for secession".
Spain's Deputy Prime Minister Soraya Saenz de Santamaria described Puigdemont as someone "who does not know where he is, where he's going".
Spain considers the referendum to be illegal and unconstitutional, and says its results are invalid. She also said that Spain's government is considering lowering the growth forecast for the Spanish economy in 2018 if the standoff in Catalonia continues.
Catalonia's separate administration wants the European Union to mediate with the government in Madrid, but Spanish Prime Minister Mariano Rajoy refuses to seek outside help. The vote reportedly had a 43 percent turnout, and national police had to intervene in incidents of violence.
The move is so far mainly symbolic and has limited economic impact because it doesn't involve relocating offices, jobs or assets.
The Spanish Prime Minister said his government would base its response on the answer it was given, including any measures it might take invoking a constitutional clause allowing for direct rule.
Saenz de Santamaria accused Puigdemont of "seriously damaging Catalonia's economic stability".
Since the EU press release, Jean Claude Juncker, the president of the European Commission, stated that the Commission will not mediate if only one side wants dialogue.
"If Catalonia splits off, then others will do that too".
"They don't understand this is a political issue, not a legal one", Enric Pineda, the chairman of the Pirate Party of Catalonia, said.