• Club await results of scans after midfielder hurt in training• Damaged knee is same one that kept him out of World CupChelsea are braced to be without Michael Essien for the majority of the forthcoming campaign as the Premier League club continue to scrutinise the severe knee ligament damage sustained by the Ghana midfielder on the first full day of pre-season training.Essien twisted after landing awkwardly last Thursday – the first day of double sessions since the first-team squad returned to Cobham – and, with the swelling on his right knee having receded slightly, has since undergone a series of scans on the joint. Chelsea are expected t...