Britain's largest sportswear chain JJB Sports, still reeling from the death of chief executive Duncan Sharpe, has admitted a management buyout is a possibility after a sharp fall in interim profits. The Wigan-based operator of around 430 stores yesterday reported a 16.8 per cent year-on-year slide in first-half pre-tax profit to £39.3 million and said same-store sales in its core JJB business rose 0.1 per cent in the first half but slipped 1.1 per cent in the 10 weeks since August 1.