Liverpool midfielder James Milner could be set for a spell on the sidelines.
The former England international suffered a hamstring injury against Manchester City, the club he left to join the Reds, at Anfield on Sunday afternoon and may well be forced to sit out the rest of the month.
The thirty-two year old had to make way during the first-half of the 0-0 stalemate between the two Premier League title contenders after picking up the injury.
Should he be ruled out for the remainder of October, he will miss league games against Huddersfield Town and Cardiff City along with the first of the Champions League double header against Red Star Belgrade.
Manager Jurgen Klopp will be sweating over whether one of his strongest performing players will be available for what is looking like an increasingly difficult trip to London to take on a resurgent Arsenal on 3rd November.
Milner has been in the form of his life during 2018 and has come back to playing in a central midfield role after being asked to cover the left-back position during the 2016/17 campaign.
Klopp will have the option of calling on Summer recruits Naby Keita and Fabinho should Milner be out of action for any serious period of time, but it will still come as a blow to the German.