Oil prices were unchanged in Asian trade on Monday, after initially falling on concerns about the outcome of a eurozone meeting later in the day on the Greek debt crisis , although worries about oversupply still weigh on the market. Prices rebounded from early lows after a European Commission official tweeted the latest proposal from Greece was a “good basis for progress” in Monday’s talks. “On a 24 hour basis we’ll see some volatility depending on what happens with Greece,” said Ric Spooner, chief market analyst at Sydney’s CMC Markets.