Click through our gallery to see if you can remember some real highs and lows for the Blades.
9. Blades photos from the noughties
The notorious 'Battle of Bramall Lane' involving United and West Bromwich Albion players in March 2002. Photo: Paul Barker
10. Blades photos from the noughties
Michael Tongue scores the equalising goal against Liverpool in the Worthington Cup semi-final, first leg match at Bramall Lane in January 2003. Photo: Alex Livesey
11. Blades photos from the noughties
United players celebrate after the dramatic extra-time win over Nottingham Forest in the Division One play-off semi-final at the Lane in May 2003. Photo: Ross Kinnaird
12. Blades photos from the noughties
United fans queue for tickets for the Worthington Cup semi-final, second leg tie against Liverpool at Anfield in January 2003. Photo: Chris Lawton