Champions League winners Liverpool suffered another injury in pre-season, with youth keeper Vitezslav Jaros sustaining an elbow ligament strain that will keep him out of action for a number of weeks.
The 17-year-old made his first-team debut as a second-half substitute earlier in pre-season against Tranmere Rovers but picked up the injury in training at Melwood.
The Czech stopper was brought in to be Simon Mignolet's back-up after Irish keeper Caoimhin Kelleher suffered a broken wrist while on holiday.
Jaros, a member of the FA Youth Cup-winning side last season, is now set to miss the whole of pre-season after being assessed by the Liverpool club doctors who deemed it not possible for the shot-stopper to return for the USA tour and the subsequent fixtures against Napoli and Lyon.