By Keith Weir LONDON, Sept 18 (Reuters) - New sponsorship and broadcast deals are expected to drive record revenues for English soccer champions Manchester United in 2013-14 and enable them to keep pace with European rivals including Real Madrid and Barcelona. United, controlled by the American Glazer family, forecast revenues would rise to between 420 and 430 million pounds ($668-684 million) in the year to next June. That was based on the team finishing at least third in the English Premier League and reaching the quarter-finals of Europe's Champions League and domestic cups. ... More...