Chris Wilder says 'the buzz is back' as the Blades prepare to return to pre-season training next week.
Speaking to the media at Shirecliffe, Wilder revealed the gruelling work will begin after the weekend, despite the players reporting back earlier this week.
The manager said: "We've had the lads back in on Thursday and Friday for testing and we're back in together, rocking and rolling from Monday.
"The buzz is back and the fixtures are out. People go away, but you're always looking forward and we have an exciting challenge ahead of us."
Wilder added: "I've got an excellent group of players, ones that last season left everything out on the pitch and this is a fantastic football club to be at.
"We've got a team spirit, a togetherness and a group mentality and that takes you a long way. We'll need to stick to our principles and beliefs as we step into the Championship and our approach will remain positive.
"We believe we've improved the squad with the players we've signed already and we will continue to look to do so in the future."