The head of the eurozone's bailout fund is beginning attempts to persuade China to invest in a scheme to help rescue member countries facing debt crises.
After meeting Chinese leaders, Klaus Regling said there were no formal negotiations and would be no deal now.
It is thought China may pay about 70bn euros ($100bn) into the fund, which is expected to be boosted to 1tn euros.
Meanwhile French President Nicolas Sarkozy said debt-ridden Greece's entry to the eurozone was a mistake.
Greece was "not ready" when it joined in 2001, he said, adding that it could be rescued thanks to a new deal on the debt crisis.
European leaders worked into the early hours of Thursday in Brussels to secure an agreement aimed at preventing the crisis from spreading to larger eurozone economies.
The deal triggered a worldwide shares rally.
Beijing has made it clear that it will demand strong guarantees on the safety of any contribution it might make.
Mr Regling, who is chief executive of the European Financial Stability Facility (EFSF), said he was not negotiating with China as a potential investor but holding consultations to decide the terms for raising the money.
"Don't expect any precise outcome of our talks," he said, quoted by AFP news agency.
"I cannot say today, and it's certainly far too early to say what kind of amounts might be envisaged."
He said China had been a regular buyer of EFSF bonds in the past.
He would present the fund's bonds as a potential commercial investment to China, he said, adding that Beijing regularly needed to find safe investments for its trade surpluses.
"I am optimistic that we will have a longer term relationship," he said.
Chinese Vice Finance Minister Zhu Guangyao said there was work still to be done.
"We need to wait for the technicalities to be clear and also to carry out serious studies before we can decide on investment," he said, quoted by AFP.
"We hope that all these technical and specialised arrangements can be thrashed out at an early date and can be implemented and feasible. That will be very important for the effectiveness" of the fund.
The President of the World Bank, Robert Zoellick, has said he believes China will invest in Europe only if there are incentives for it to do so.
"I don't think that China will just come in as a white knight to try to provide money just to bail out Europeans," he told the BBC.
But investor Jim Rogers said China was prepared to help.
"From China's point of view, it's cheap foreign aid. They'll buy goodwill. I guess they'll put up some money," he said on BBC Radio 4's Today programme.
The suggestion that China should use its financial clout to assist the eurozone met with mixed reactions on the streets of Beijing.
"If we have the ability to help them then we should, but there is no feeling of pride in that," said Xu Juan - a 27-year-old employee of an international trade firm.
"We need to focus on doing a good job on developing our own country."
Wang Xiaodong, a 23-year-old university student, said "With the global economy everybody prospers together or becomes weaker together, so we just have to endure this tough time together."
The framework for the new EFSF bailout fund is to be put in place in November.
Germany, as the largest economy in eurozone, is expected to be the largest contributor.
Asian markets rose for a second day on Friday and bank stocks in Europe continued to rally, a day after the deal was reached.