Dan Walker and guests preview the FA Cup final between Crystal Palace and Manchester United. The 2016 showpiece is a repeat of the 1990 final, which United won 1-0 in a replay after the original game ended 3-3. There is no shortage of talking points for Dan and his guests at Wembley, as current Palace manager Alan Pardew played in the 1990 final for the Eagles, while Manchester United are bidding for their first major title since Sir Alex Ferguson's retirement.