Former Wind Mobile backer Naguib Sawiris said he is re-entering the Canadian telecom market with a “long-term commitment” and the purchase of Allstream from Manitoba Telecom Services Inc. in a deal valued at $520 million. Sawiris' Paris-based investment firm, Accelero Capital Holdings, which has also submitted an offer to purchase Wind Mobile Canada from Amsterdam-based VimpelCom Ltd., will purchase the Allstream business services unit and its national fibre network, Accelero said in a release Friday. "This investment reflects Accelero's long-term commitment to the...