The Blades hovered in the second tier for more than 10 years , until they briefly re-entered the Premier League for the 2006 - 07 season .
The Blades were relegated straight back down after an unsuccessful campaign accumulating only 38 points .
The Blades hovered in the second tier for more than 10 years , until they briefly re-entered the Premier League for the 2006 - 07 season , but were relegated straight back down after an unsuccessful campaign accumulating only 38 points .