
Who will replace Alex Ferguson? —
Jose Mourinho, right, had been widely expected to return to Chelsea if he leaves Real Madrid at the end of this season -- but Alex Ferguson's decision to retire has prompted a flood of bets from punters that the Portuguese coach will instead go to Manchester United.

Who will replace Alex Ferguson? —
Ferguson's fellow Scot, Everton manager David Moyes, had previously been the bookmakers' favorite to take over at Old Trafford. The 50-year-old Scot has impressed on a tight budget at the English Premier League club since his arrival in 2002.

Who will replace Alex Ferguson? —
Moyes is out of contract in the summer -- as is Bayern Munich coach Jupp Heynckes. This season the 68-year-old coach has guided Bayern to the Bundesliga title as well as the Champions League final - the Munich club will play German rivals Borussia Dortmund at Wembley on May 25. However, Heynckes will step down at the end of this season after Bayern opted to appoint Pep Guardiola on a three-year contract from July 1.

Who will replace Alex Ferguson? —
Jurgen Klopp is also among the bookies' frontrunners, having guided Borussia Dortmund to this month's European Champions League final. The 45-year-old coach helped Dortmund win the German Bundesliga title the previous two seasons.

Who will replace Alex Ferguson? —
Ferguson's former "supersub" Ole Gunnar Solskjaer is another linked with the job. The 40-year-old Norwegian, a Champions League winner with United in 1999, began his managerial career with Molde after injury ended his playing days, and has already won two domestic titles in his homeland. Before that he successfully coached United's reserves.

Who will replace Alex Ferguson? —
Michael Laudrup is also seen as a contender after a successful first season in the English Premier League with Swansea, guiding the Welsh club to the League Cup trophy. The former Barcelona star has previous managerial experience in Spain with Getafe and Mallorca, and in Russia with Spartak Moscow.

Who will replace Alex Ferguson? —
Paris Saint-Germain coach Carlo Ancelotti is another being backed to replace Ferguson. The 53-year-old Italian has won virtually every honor in the game as a player and manager with clubs including AC Milan, Roma and Chelsea. There has been intense speculation Ancelotti will leave French league leaders at the end of the season.

Who will replace Alex Ferguson? —
Former United captain Roy Keane was once seen as Ferguson's future successor, but the Irishman has focused on media work since being sacked by English second division team Ipswich in January 2011. He took Sunderland into the Premier League at the first attempt but quit in December 2008 after a run of poor results.

Who will replace Alex Ferguson? —
Rene Meulensteen, right, has been Ferguson's assistant since 2008, but the 49-year-old Dutchman is not expected to make the step up to the top job despite an association with United that started more than a decade ago as youth coach.

Who will replace Alex Ferguson? —
One of the outsiders is veteran United player Ryan Giggs, who has won 13 English league titles under Ferguson since his debut in 1991. The Welshman, who is 40 in November, has signed another one-year playing contract.