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It is many a young boy’s dream to become a professional footballer. Understandable given the riches and the adulation on offer to the biggest stars in the world’s most popular sport. But behind football's flashy facade there are real problems - racism, corruption and amongst some players, dangerous levels of depression. Hardtalk speaks to Clarke Carlisle, newly retired professional footballer and chairman of England’s Professional Footballers’ Association. Is there a cure for the sickness in football?