Chelsea manager Jose Mourinho believes the club were "not successful" in Europe last season - despite lifting the Europa League trophy.

The returning manager says falling out of the Champions League at the group stage again would be a "big disappointment", and says he wants his team to focus on obtaining Premier League and Champions League success.

Last season Chelsea became the first ever Champions League holders to be knocked out at the group stage, before going on to beat Benfica in May to win the Europa League.