Burton boss Nigel Clough said his team were never overawed by Manchester United after they held the Premiership side to a 0-0 draw in the FA Cup.
"It was pretty even in the first half and we never feared the worst, although if United hit top form they would have put four or five past us," said Clough.
"I did get a little bit upset with a couple of decisions because I felt they didn't go our way.
"The chairman will be ecstatic with a replay - it'll be great for the lads."
Sir Alex Ferguson said he was pleased his side managed a 0-0 draw.
"I'm disappointed, but also happy my team have the chance of a replay," said the Old Trafford boss.
"You can get shocks, but nothing really serious happened against us - a couple of corners that were scrambled clear.
"It seems we are good at keeping teams alive in the FA Cup. We gave Exeter a great pay day last year and the same has come true for Burton."