English giants Chelsea and Manchester United remain on course for an FA Cup final in Cardiff after the semi-finals draw kept them apart in case they win their upcoming quarter-finals replays. The draw will see Blackburn Rovers take on either Chelsea or Tottenham. On the other hand Premiership strugglers Watford will face the winner from the Middlesbrough-Manchester United replay match at the Riverside. The replay ties are scheduled to be played on the 19th of March after United were held to a 2-2 draw by Boro, while Chelsea secured a last-minute equalizer to level at 3-3 with Tottenham. Rovers advanced to the semis after beating Manchester City 2-0 at Ewood Park on Sunday, as Hameur Bouazza's strike lifted Watford over Plymouth at the latter's ground. The ties will take place at the weekend of 14th-15th of April, but the venues to host the games are yet to be decided.