Arsenal defender Calum Chambers faces another two weeks on the sidelines before being able to return from a hip injury after his expected recovery date was pushed back.
A hip problem suffered while on England Under-21s duty kept the 22-year-old sidelined until September 20.
Chambers played 45 minutes of the Gunners' 1-0 win over Doncaster Rovers in the EFL Cup before being substituted by manager Arsene Wenger.
The England international was expected to be injured for two weeks, with Arsenal's defeat to Watford on Saturday proposed as a possible return date for the defender.
But according to football.london, the full-back's return date has been pushed back by a further two weeks, meaning Chambers will miss Arsenal's trip to Red Star Belgrade in the Europa League on Thursday.
The Gunners' trip to Serbia is followed by a game against Everton in the Premier League on Sunday.
