BRUSSELS — With Greece’s bailout set to expire at the end of the month, it is becoming clear that negotiators mean to go down to the wire. The brinkmanship brings with it the risks of reaching no agreement at all, or a last-minute deal that might do little to solve Greece’s underlying economic problems.

“It looks like both sides are going to walk this to the precipice,” said Mujtaba Rahman, who heads the Europe practice for the Eurasia Group, a political-risk consultant firm. “But any deal that comes out of that is of course going to be more political and even more economically suboptimal.”

On Thursday, for the fourth time in a week, a meeting of the Eurogroup of eurozone finance ministers ended without resolution on a Greek debt package. The group agreed only to meet yet again, on Saturday. That will push the impasse closer to the deadline.

Without the bailout, and a remaining 7.2 billion euros, or about $8.1 billion, loan tranche that Athens is still hoping to receive under it, Greece could soon default on its debt and possibly have to leave the euro currency union.