STEVE McClaren says he has no regrets about taking the Nottingham Forest job – as he looks to shoot down the Reds this afternoon.
McClaren, now in charge of fierce rivals Derby, believes Forest will be back in the Premier League one day.
But his goal this lunchtime will be to secure a win for the Rams that might help ensure Forest's wait for promotion goes on for another year at least.
"I've no regrets about taking the Forest job, certainly not. A great club. One day it will definitely be back in the Premier League," said the former England boss.
"It was disappointing what happened there (at Forest), that was as much my fault as anybody else's.
"But, when I came here six months ago, I talked about that and put that to bed. It is a great club Nottingham Forest, great fans and a club destined one year to be ready for the Premier League.
"I am just pleased to have been associated with Nottingham Forest, now I am on the other side at Derby."
McClaren takes heart from the fact that the Reds will be missing one of their key players, in Andy Reid.
"I hear Andy Reid is now injured, that is a big loss for them," said McClaren. "He is a big player for them, very influential.
"I know Andy very well. He is a good player."
Derby, in contrast, have had good news, with Will Hughes having returned to training.
The 18-year-old midfielder handed the Rams a scare when a groin injury forced him to limp off in the first half of last Saturday's goalless draw at Reading. A scan showed slight damage but he has been "wrapped in cotton wool" this week.
"Will trained for the first time yesterday and he is fine," said McClaren.
Derby will be without experienced midfielder John Eustace who starts a two-match ban.
McClaren must decide whether to go with the midfield trio of Hughes, Jeff Hendrick and Craig Bryson or bring in George Thorne for his debut.
Thorne was signed on loan from West Bromwich Albion seven weeks ago as cover and competition for Eustace, but he has yet to make an appearance.
McClaren says Thorne is in the frame, but added: "If Will is fit, we have got Jeff (Hendrick), who has done well, and Brys (Craig Bryson). So we have got very good players in there, great competition for places."