The Trotters midfielder could leave London hospital by the end of the week and return north for the first time since suffering a cardiac arrest against Tottenham.Fabrice Muamba could leave the London Chest Hospital by the end of the week and return north for the first time since suffering a cardiac arrest with Bolton Wanderers reportedly hopeful of a Premier League return for the midfielder according to The Daily Mail.The 24-year-old collapsed on the pitch last month during the Trotters\' FA Cup quarter final at Tottenham and Bolton will remain cautious over a possible return, as there are several medical issues still to be resolved surrounding his health.The former England Under-21 international\'s heart and major organs have apparently been given the all-clear and he has recovered enough for doctors to consider transferring him to a high-dependency unit closer to home towards the end of this week.Reports this week suggested that Muamba could return to training within a month and it is possible that he will be able to take part in a gentle workout before the end of the season should the doctors give him the go-ahead.