Real Madrid boss Jose Mourinho reveals to BBC Radio 4 his "passion" to return to the Premier League and manage an English club in the future.The ex-Chelsea manager, who took over at Real in May 2010, won two Premier League titles, two Carling Cups and an FA Cup with the Blues between 2004-2007.Mourinho insists he is happy in La Liga, but his "next step will be to go back" to England and "stay for a long time".