In the meantime, test your knowledge of the Blades' signings from the last decade - some well known, some less so - and see if you can figure out the face from the clue. Keep a note of your answers, they're revealed at the end.
5. I cost the Blades around £1.5m in 2014/15
a). Kieron Freeman. b). Ben Davies. c). John Brayford. d). Mark McNulty. (Photo by Mike Hewitt/Getty Images) Photo: Mike Hewitt
6. I joined the club for my third spell in 2015/16
a). Billy Sharp. b). James Beattie. c). Conor Sammon. d). Ched Evans. (Photo by Nathan Stirk/Getty Images) Photo: Nathan Stirk
7. I signed during the 2016/17 season, and I have five caps for the Isle of Wight
a). Mark Howard. b). Steve Simonsen. c). Simon Moore. d). Richard Wright. (Photo by Nathan Stirk/Getty Images) Photo: Nathan Stirk
8. I arrived in the 2017/18 campaign, and am now a Fantasy Football legend
a). Enda Stevens. b). John Lundstram. c). George Baldock. d). Lee Evans. (Photo by Nathan Stirk/Getty Images) Photo: Nathan Stirk