By Tom Blow Sir Dave Brailsford will conduct an audit on Manchester United in a bid to turn the struggling team into a winning machine. Sir Jim Ratcliffe has agreed to buy a 25 per cent stake in United for £1.3billion and will take charge of football affairs, although the deal still needs to be ratified by the Premier League. Brailsford is the director of sport at INEOS, the company Ratcliffe is chairman of. Brailsford was expected to take on a big role at Old Trafford after Ratcliffe’s deal was announced, having watched the team on multiple occasions over the past month. United fans hope his …