Ferguson's potential successors
The Real Madrid coach, whose agent has said is 80% likely to join Chelsea this summer, has long been rumoured to hold an interest in succeeding Sir Alex.
The Everton boss has enjoyed a long and impressive tenure at Everton, but his failure to win trophies may could against him.
A legend at Old Trafford, and with coaching experience at United, Solskjaer has enjoyed a remarkable start to his managerial career with Molde.
The Chilean appears likely to leave Malaga this summer and has excelled this season despite financial hindrances.
Should Manchester United opt to follow in the footsteps of Barcelona, or the Liverpool 'Boot Room', the club's assistant manager could be handed an unexpected promotion.
Due to his status at the club, Giggs has been touted as a potential successor, although Ferguson suggested in March that he would need ten years' coaching experience before being considered for the United job.
The Bayern Munich coach is on course for a Treble, but he will be out of work in the summer. However, he is about to turn 68, and has suggested he is ready to take a step back.
The PSG coach, strongly linked with a summer switch to Real Madrid, has spoken highly about English football after an impressive spell with Chelsea.
Devoted to Manchester United throughout his career, Neville has since become a respected pundit and a member of the England coaching team.
The former France boss is currently available and Ferguson, who signed the player in 2001, has praised his intelligence and leadership skills as a coach.
Low has attracted widespread praise for his efforts in charge of the German national team.
The German, who speaks perfect English, has enjoyed remarkable success with Borussia Dortmund, but has always maintained his commitment to his current club.