Manuel Lanzini has been a key player for West Ham United over the last few seasons, so it was that much more devastating when news broke about the midfielder's injury woe.
The Hammers confirmed on their official website that the 25-year-old had suffered a serious knee injury while on international duty with Argentina.
The playmaker was preparing for his nation's World Cup campaign at Russia 2018, but due to the injury, he will no longer be able to compete.
The extent of the injury is unknown, but some fans are concerned that the midfielder, who has earned four caps for his country, will miss the start of the 2018-19 season.
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Last season, Lanzini made 29 appearances in all competitions, and in that time he scored five goals and created six assists.
Manuel Pellegrini's vision for the club is unclear following his appointment as West Ham manager, but it is likely that Lanzini will be a prominent figure when fit.