A deal between Bharti Airtel and South Africa’s MTN to create a transcontinental mobile behemoth may miss the stipulated deadline even as a team of officials from the Indian company travels to Johannesburg next week to try and crystallise financial terms that could include a sweetened offer. All efforts are on to seal the $24-billion deal by the last week of this month, but it may take a few days more as the two sides attempt to satisfy South African regulatory queries, mainly related to the management structure, two people with knowledge of the situation said. […]