Oil prices could go under $40 a barrel, if the Organization of the Petroleum Exporting Countries (OPEC) production cut agreement doesn't get worked out, according to one expert.
The group will likely get its planned production deal done, but Helima Croft, global head of commodity strategy at RBC Capital Markets, said the agreement won't be finalized until the last minute.
"I think they'll get it done, but I think they'll get it done right before November 30," Croft said on CNBC's "Power Lunch" on Monday.