9. John Radford
The fourth all-time highest scorer of Arsenal featuring in the worst signings list of another London club is a story in itself. Unable to stake a place in the Arsenal side, Radford moved on to West Ham United in December 1976 for £80,000.
At West Ham, he got plenty of opportunities, however, he failed to capitalize on that. He made 28 league appearances in one year for the Hammers but failed to score in any of them. He later joined Blackburn in 1977.
8. Sebastien Haller
Haller had impressed during spells in the Netherlands and Germany and arrived in the capital off the back of a 20-goal season for Eintracht Frankfurt.
The £45m fees placed pressure upon the star’s shoulders and he appeared weighed down by the expectation. The forward failed to consistently find the net in claret and blue and was sold to Ajax 18 months later for a loss of around £25m. Since then, he has once again established himself as a top striker.
7. Benni McCarthy
McCarthy was signed by West Ham for an undisclosed fee on the deadline day of the 2010 January transfer window from Blackburn Rovers. In his debut, he picked up an injury that would keep him out for up to six weeks. He came back extremely unfit and only went on to play another 13 games for West Ham.
In April 2011, McCarthy left West Ham by mutual agreement after the parties agreed to a £1.5million pay-off to terminate his contract. He made only two Premier League starts and fourteen appearances in all competitions scoring no goals.
6. Joey Beauchamp
Beauchamp was signed by West Ham United in 1994 for a fee of around £1 million from his boyhood club Oxford United. However, he didn’t last long. He failed to settle and never played a competitive game for the Hammers, finding commuting from Oxford onerous and being unwilling to move to London.
A mere 58 days later he was signed by Swindon for a club-record combined fee of £800,000, which included defender Adrian Whitbread going in the opposite direction. Whitbread was valued at £750,000 in the deal.
5. Marco Boogers
Marco Boogers was signed by Redknapp for £800,000 from Sparta Rotterdam in 1995 after the manager was shown a video of him looking “different class.” The Dutchman featured only four times for West Ham and did not start a single game.
He was sent off early in his Hammers career after a horrific challenge on Gary Neville at Old Trafford before going missing soon after. During his first few months at West Ham, Boogers had been suffering from worsening pain in his knee.
Upon his return to fitness in the New Year, Boogers was loaned to FC Groningen, before a mutual termination of Boogers’ contract was agreed upon in the summer of 1996.