Manchester United are not immune to failed signings. Sir Alex Ferguson has had his share. Not surprising really given that he's been manager for 26 years next month.
Ron Atkinson and Tommy Docherty take the biscuit though. Each was manager for five years and each failed to win the title.
When you come to consider transfer signings that never delivered at Manchester United, there are plenty of candidates. Is it fair to include players like Owen Hargreaves and Louis Saha who had such bad luck with injuries?
Hargreaves looked like the answer to the conundrum of how to follow Roy Keane. He had a history of injury at Bayern Munich and maybe the United doctors should have looked more closely at his tendonitis.
Sir Alex paid £17 million for a player who made only 39 appearances in four years, 34 of them in his first.
Louis Saha cost £12.4 million and, while he made a total of 124 appearances, scoring 42 goals, became the proverbial "sick-note."
A couple of other near-misses include Ted McDougall, Ralph Milne and Ian Ure.
Ted was signed from Bournemouth after a phenomenal return of 126 goals in 165 appearances. United were struggling to replace Denis Law and Bobby Charlton. Wilf McGuinness had been and gone as successor to Sir Matt Busby.
Frank O'Farrell stayed long enough to pay £200,000 for Ted, whose reputation had been created by scoring nine goals in an 11-0 FA Cup win for Bournemouth. Tommy Docherty arrived soon after and Ted left for West Ham where his stay was even shorter.
Some people might consider Ralph Milne to have been dreadfully unlucky. Many fans hated him. Sir Alex paid £170,000 and later admitted it was his worst ever signing. Ralph left Old Trafford a broken man.
Ian Ure was much hyped before he joined United in 1969 aged 29 after a successful career and 202 appearances for Arsenal.
He made just 47 appearances for the Red Devils where he was Wilf McGuiness' only signing. He only ever played three more top flight games.
So there are many to choose from, for various reasons. You no doubt will have your own suggestions. Here, in no particular order, are ten to consider.