Betting: United's online betting partners bwin make the Reds favourites to win the match at 1.33, and give a price of 1.38 for David Moyes' men to advance to Wembley. A draw on the night, which would not be good enough for United, is at 5.00 and a Sunderland win is 8.50, while the price for the visitors triumphing in the tie overall is 2.80. Adnan Januzaj was in sublime form in the first leg at the Stadium of Light, and the talented teenager is 6.50 to open the scoring on Wednesday.
Did you know? The Reds were either level or trailing after the first leg of the club's last three semi-finals in this competition, in 2006, 2009 and 2010. However, in each year United won the second leg to advance to the final and claim the trophy.
The manager: Gus Poyet has certainly improved Sunderland's fortunes following the turbulent reign of the combustible Paulo Di Canio, and while his side remain mired in a battle against relegation from the Barclays Premier League, the cup run under the affable Uruguayan has lifted spirits for Black Cats players and fans alike.
Star man: The first player signed in Roberto Mancini's time as manager at Manchester City, Adam Johnson had become surplus to requirements by August 2012 when Sunderland's then-manager Martin O'Neill brought him back over the Pennines to his native Wearside. The winger has been in good form of late, posing problems off the bench in the first leg against United and bagging a hat-trick at Fulham, leading to talk of a recall to the England set-up ahead of the World Cup.
Quote/unquote: "We did so well to win the first leg against Manchester United but we've still got to finish the job. The cup run has given us a tremendous lift." Gus Poyet
Whistle-blower: United will hope the presence of referee Lee Mason will be a good omen – the Reds have won both