Manchester City boss Roberto Mancini must decide who to replace Carlos Tevez (hamstring) with in Saturday's FA Cup semi-final against Manchester United.Mario Balotelli and Edin Dzeko are in contention, while Micah Richards is back from his own hamstring injury.
Dimitar Berbatov is set to return for United at Wembley as a replacement for the suspended Wayne Rooney.
Jonny Evans also misses out because of a ban, while Darren Fletcher is two weeks away from a return after a virus.
Man City (from): Hart, Taylor, Richards, Zabaleta, Kompany, Lescott, Kolarov, Boyata, Wright-Phillips, De Jong, Y Toure, Vieira, Barry, Silva, Milner, A Johnson, Dzeko, Balotelli, Razak, McGivern.
Man Utd (from): Van der Sar, Kuszczak, Rafael, O'Shea, Brown, Ferdinand, Smalling, Vidic, Evra, Fabio, Valencia, Gibson, Anderson, Scholes, Park, Carrick, Giggs, Nani, Berbatov, Hernandez, Owen.
Alan Hansen's view on the FA Cup semi-finals
BIG-MATCH FACTS
The tie in context
• Manchester United are looking for a second treble under Sir Alex Ferguson, and are on course to repeat the 1998/99 season when they won the Champions League, Premier League and FA Cup.
• Sir Alex is the most decorated manager in English and Scottish football history with 32 major titles (23 of which were with United). He is hoping to add to his record of five FA Cup wins for the Old Trafford club.
• Between them, these Manchester clubs have lifted the trophy 15 times.
• Manchester City's last trophy was the 1976 League Cup.
• United were last at Wembley in August, when they beat Chelsea 3-1 in the Community Shield.
• City are paying their first visit to the new Wembley. They last graced the old stadium in May 1999, winning a dramatic Division Two play-off final against Gillingham. It was 2-2 after extra time, before City won the penalty shoot-out 3-1.
• The winners will face either Bolton or Stoke in the final on 14 May.
Head-to-head
• Manchester United are unbeaten in four games against Manchester City.
• They have won three and drawn one of the quartet of Premier League clashes, which have all been under Man City manager Roberto Mancini.
• This season's two clashes saw a share of the spoils at Eastlands, and a single goal victory at Old Trafford.
Manchester City 0-0 Manchester United (Prem Lge, 10 Nov)
Manchester United 2-1 Manchester City (Prem Lge, 12 Feb)
• Although they have playing each other since 1894, they have only met six times in the FA Cup.
FA Cup records and best performances
• The Red Devils are looking for a fifth successive victory over their local rivals in this competition.
• They have gone on to win the Cup on two occasions after knocking out City (1996 and 2004).
• In 1987, they beat City 1-0 in the third round through a Norman Whiteside goal, in Ferguson's first FA Cup tie in charge.
• City won the only previous clash in the semi-finals; 3-0 in 1926. They then lost to Bolton in the final.
The clubs
MANCHESTER CITY
Current form
• Going into this tie on the back of Monday's 3-0 away defeat to Liverpool; their second loss in three outings.
• Lost the last three away, and not won in 10 on the road since a 3-1 Premier League triumph over Newcastle at St James' Park on Boxing Day.
FA Cup form
• The four-times winners and four-times runners-up, who have not lifted the trophy since 1969, have qualified for the semi-finals for the 11th time and first since 1981, when they eventually lost in the final to Tottenham.
• They have won eight of their previous 10 semi-finals in the competition.
• Needed replays to knock out Leicester and Notts County in the third and fourth rounds, before eliminating Aston Villa and Reading at the first time of asking in the fifth round and quarter-finals respectively.
• Stoke were the last top-flight club to knock them out, in last season's fifth round replay.
• Their 16 goals in this cup run have been shared between 10 different scorers, with three each from Carlos Tevez and Patrick Vieira.
MANCHESTER UNITED
Current form
• Won the last seven in all competitions.
• Liverpool were the last club to deny them victory, courtesy of a 3-1 Premier League triumph at Anfield on 6 March.
FA Cup form
• Last won the competition for a record 11th time in 2004, beating Millwall in the final.
• Making a record 27th appearance in the semi-finals.
• Victory will ensure a 19th appearance in the final, and extend the competition record they already hold.
• Registered single goal victories in the third, fourth and fifth rounds, before beating Arsenal 2-0 in the quarter-finals.
• Their victims in this run have included Premier League heavyweights Liverpool and Arsenal.
• Everton were the last top-flight club to halt their progress, in the semi-finals two years ago. It was the only time in United's last 14 FA Cup semi-finals that they have ended on the losing side.
• Ryan Giggs is set to play in his eighth semi-final, and will be aiming to maintain a 100% winning record.
Match officials
Referee: Mike Dean (Wirral)
Assistant referees: Mike Mullarkey and Peter Kirkup
Fourth official: Chris Foy
Source: BBC Sport
Source: BBC Sport