Liverpool star Wataru Endo will be out for 'quite a long time' after suffering what appeared to be a serious injury against Sunderland . Arne Slot has provided a bleak update on Endo, 33, after he was stretchered off during Wednesday's 1-0 victory at the Stadium of Light . The midfielder caught his foot in the turf while making a vital clearance shortly after Virgil van Dijk had broken the deadlock in the second half. Endo soldiered on to help defend for the resulting corner, but he was clearly