West Ham made the move to sign Jonathan Calleri in the summer, as they looked to bolster their attacking options.
Calleri signed on a season long loan from Deportivo Maldonado, and has been unable to show why he was so highly rated in Argentina.
West Ham United's Jonathan Calleri shoots wide
Calleri was touted as one of the top strikers in South America ahead of his Premier League switch, and West Ham's rivals Tottenham Hotspur were linked with a deal.
Back in May, Calleri's father had told Yahoo! Brasil that Tottenham had a provisional agreement with the striker to sign him once his involvement with Sao Paolo, where he was on loan, was over.
This evidently did not play out, with Tottenham stepping aside and West Ham pushing harder for a deal.
West Ham United's Jonathan Calleri during training
Now with almost half the Premier League season gone, Tottenham appear wise to have allowed West Ham to step in and make a mistake.
Calleri had a creditable record of 16 goals in 31 game at Sao Paolo, and has not become a terrible player overnight, but transferring that form to English football was always going to be tough.
To do so in a high pressured and tense environment as the London Stadium was an even bigger ask, and Calleri has failed to produce.
He was not even on the bench for the Hammers at the weekend against Liverpool, and the number of appearances he has made can be counted on one hand, with no goals to his name.
Tottenham's striker signing Vincent Janssen, has not exactly been a success so far either, while West Ham have the woeful Simone Zaza on their books too, but on this particular one, Spurs were right to allow the Hammers to dive in on Calleri and take a pass themselves.