The Globe and Mail reports in its Friday edition that unnamed sources say Williams's Canadian unit has attracted at least seven bidders. A Reuters dispatch to The Globe reports that Williams is working with Barclays and Toronto-Dominion Bank on the sale. Sources say interest has come from pipeline companies Enbridge, Pembina Pipeline, Keyera and Inter Pipeline. Pension funds including the Canada Pension Plan Investment Board, the Ontario Teachers' Pension Plan and the Ontario Municipal Employees Retirement System, as well as U.S. companies, also expressed interest. The Canadian unit could fetch more than $1-billion (U.S.) and as much as $2-billion (U.S.), sources say. The sale process for Williams Canada is at an advanced stage, and a deal could result by the end of the month, sources say. It is still not clear whether the buyers will be able to match the company's price expectations, says one source. Williams has invested more than $2-billion (U.S.) in Canada. Sources say interest from buyers has been robust, highlighting demand for mid-stream assets that offer a steady cash flow despite volatility in the price of oil. Mid-stream companies are involved in the processing and transportation of oil and gas.