Manuel Pellegrini spent in excess of £100m during the summer transfer window but one of his most high-profile additions was the capture of Jack Wilshere.

The England international joined the Hammers on a free transfer after his contract with Arsenal expired, with new Gunners boss Unai Emery making it clear that the academy graduate would not be guaranteed first-team football.

Wilshere subsequently featured in all four of West Ham's first matches this season, though the Hammers lost all those matches, but was absent for Sunday's victory over Everton - and it has since been revealed he has suffered another major injury setback.

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Having undergone surgery on an ankle problem, Wilshere is set to spend around six weeks on the sidelines - missing crucial matches against Chelsea, Manchester United and Tottenham as a result.

That injury timeline would put the earliest Wilshere could return for down as November, by which stage West Ham will be well into their campaign and he may struggle to force his way back into Manuel Pellegrini's side.

While it is easy to see why the Hammers jumped at the chance to land a player of Wilshere's calibre on a free transfer, his injury record speaks for itself and West Ham have made a mistake by securing him to a three-year deal.

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