Marko Arnautovic will wear the No7 shirt for the 2017/18 season, after the Premier League ratified his request to change from 27 following the opening game of the campaign at Manchester United.
Sofiane Feghouli, the Club’s previous No7, completed his transfer to Turkish side Galatasaray this week, freeing up the squad number for West Ham’s record buy.
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Arnautovic has previously worn the No7 shirt at Werder Bremen and for the Austria national team and will appear in his new number for the first time when the Hammers travel to Southampton on Saturday.
The Club have contacted any supporters who purchased a shirt printed with Arnautovic and 27 and have offered a replacement following his change of squad number.