BBC Sport https://www.bbc.co.uk/sport/football/64836884 https://ichef.bbci.co.uk/ace/standard/240/cpsprodpb/F535/production/_128837726_38c8f04471c0144c21af943adcac59399a6c6dab.jpg Newcastle manager Eddie Howe says he has "not sought any assurances" after fresh questions are raised about the club's ownership.