bob shannon , 59 , helped prepare hatton for his comeback fight against vyacheslav senchenko in november 2012 , which the former two-weight world champion lost and promptly retired .
the manchester-based trainer 's stable includes hatton 's brother , matthew , the european welterweight champion , and fighters who have won british and european titles .
shannon has been charged with a sexual assault against a girl under the age of 16 .