:::::Since it's a BLP article, I'd suggest that any serious unsourced statements be removed - but those few (if any) which are "obvious" be left in with a fact tag on them.  I believe usage of the Citation/Footnotes banner is unnecessary since most of the unsourced statements should be removed as per WP:BLP, which states that "Unsourced or poorly sourced controversial (negative, positive, or just highly questionable) material about living persons should be removed immediately from Wikipedia articles, talk pages, and user pages".