Sebastien Haller's failed transfer to West Ham came at a loss of £25 million for the Hammers after the striker's 13 months spell in east London.
The Ivory Coast international is still the Hammers record signing at £45million, but the move did not work out and in January 2021 his former manager Erik ten Hag made him Ajax's club-record transfer for £20m.
Haller's move has certainly worked out for the Dutch giants and the striker himself, but three transfer windows later West Ham have yet to replace the Ivory Coast international and are entirely reliant on Michail Antonio to lead the line.
