Liverpool fans have been trying to digest the news that one of their key players will miss Saturday’s showdown against Manchester United, as well as a handful of the fixtures in the calendar.The Merseyside outfit confirmed on theirÂofficial websiteÂon Tuesday that Sadio Mane will be out for up to six weeks with a hamstring injury.The winger suffered the blow while on international duty with Senegal during a World Cup qualifying victory over the Cape Verde Islands on Saturday.It could not have come at a worse time for Jurgen Klopp and his men due to the fact that they face their arch enemies this weekend have have picked up just one win in their last seven matches in all competitions.The fans have been left disappointed by the news, as has radio pundit Stan Collymore, who played for the Reds between 1995 and 1997.The former striker posted a short tweet, but his feelings were clear to see.