TORONTO -- Mounting pressure over the Greek debt payment deadline left its mark Thursday on global markets.

U.S. stock markets appeared set to weaken out of the gate, with Dow and S&P 500 futures shedding 0.1 per cent.

Earlier in the day, leaders in Greece said a deal could be secured with its creditors by Sunday that would prevent the country from a default on its June 5 loan repayment. However, its creditors responded by saying the nation must ensure it doesn't fall into past habits of reckless borrowing and an inefficient public sector, which left traders unconvinced a solution was imminent.

The Canadian dollar was down 0.20 of a U.S. cent at 80.06 cents.

In commodities, oil prices extended their retrenchment away from the $60-mark, with the July contract dropping 10 cents at US$57.41 in New York.

June gold rose 80 cents to $1,187.30 an ounce.