Manchester United boss Sir Alex Ferguson wants three big summer signings.

The Sunday Mirror says Ferguson is ready to break the bank to keep Manchester United at the summit of English football.

He has identified a need to ­recruit a centre-back, a midfielder and a ­left-back - but he has assured ­United's fans that the club's - American owners will give him their full financial backing if he identifies a big-name signing.

United are monitoring Cristiano Ronaldo's situation at Real Madrid, while the club are ready to test Tottenham's resolve for Gareth Bale and Real Madrid's Luka Modric are also attracting Ferguson's attention.