Chris Wilder is looking forward to Saturday's South Yorkshire derby against a club he has fond memories of from his playing days.
Speaking ahead of the clash against Rotherham at the AESSEAL New York Stadium, the Blades boss was happy to reminisce about his time as a player at Millmoor.
He remarked: "I really enjoyed my time there, it wasn't the most successful in terms of winning promotions, but it came at the right time for myself.
"It's a great club, I was treated fantastically well by the club and the supporters and it was a really happy three or four years of my playing career.
"I needed to play games and Rotherham gave me that opportunity at the time, there are a lot of similarities between the clubs, both are working class, not arrogant and don't get above their stations, working really hard for everything they gain."
And Wilder has acknowledged his side will need to be at their best to beat the Millers, with there being a clear mutual respect between the two clubs and their respective staff.
He added: "I've been hugely impressed by Paul (Warne) and his staff and what they've achieved in a short space of time, turning it round following relegation and winning promotion in the manner they did.
"They've settled well back in the Championship and this is going to be a tough game for us. They go about it like us, they get good players and good people in and around the club.
"People like Richie Barker and Mike Pollitt who played with Paul during a successful time under Ronnie Moore, they've got a tremendous feel for that football club.
"The old ground is where I played, but when you drive past the new one you appreciate it's a fantastic stadium to go to and the chairmen deserves a lot of credit for what's he's done for the club and the town."