BBC Sport https://www.bbc.co.uk/sport/football/65424419 https://ichef.bbci.co.uk/ace/standard/240/cpsprodpb/41E9/production/_129537861_gettyimages-1484677389.jpg Eddie Howe says there is more to come from Alexander Isak and draws Thierry Henry comparisons after the striker's assist during Newcastle's 4-1…