Henry had been working with Arsenal youth players as part of his UEFA ' A ' Licence course .
Henry is arsenal 's all - time leading scorer with 174 goals in 254 appearances from 1999 to 2007 .
Henry , Arsenal 's all - time leading scorer with 174 goals in 254 appearances from 1999 to 2007 , had been working with Arsenal youth players as part of his UEFA ' A ' Licence course .