Caldwell led the Clarets to a famous Carling Cup penalty shootout victory at Chelsea's fortress-like home last week.

And the 28-year-old – who started his career at Newcastle – believes Joe Kinnear's side are also capable of upsetting the odds when they take on the Premier League leaders in west London tomorrow.

"Newcastle can definitely go there and get a result," Caldwell told the Gazette.

"For me, Chelsea are the best team in the country, if not Europe, and they're playing some great stuff, but Newcastle have got quality players of their own.

"I think the key is to start cautiously and get into the game, then you can start creating a few chances of your own, and Newcastle have the quality to do that."

Caldwell watched his brother Gary play for Scotland against Argentina in midweek, and he was impressed with United winger Jonas Gutierrez, who set up Maxi Rodriguez's winner.

And Caldwell – who captained Sunderland during his two and a half years at the Stadium of Light – believes Kinnear has enough firepower at his disposal, including Michael Owen, Obafemi Martins and Shola Ameobi, to cause Chelsea problems.

Caldwell added: "I don't think Argentina were playing to their maximum, but you could see Gutierrez was a quality player. He's got a lot of pace and talent.

"And if you have Michael Owen in your team, you know you've got a chance to win. He'll score goals against any team, at any time.

"Big Shola's back in form, and there's Martins as well. They've got great attacking options. But if you're going to go to Chelsea and win, first and foremost your defensive unit's got to play very well. I think that's the most important thing."

Caldwell was in the Newcastle side beaten 5-0 at Stamford Bridge just over five years ago, with Damien Duff among the scorers as the Blues ran riot.

He said: "It was a hard night. Damien Duff was on fire, and they played really well. In terms of my career, I learnt a lot that night."

While Caldwell and his Burnley team-mates were realistic going into their fourth-round tie, they were ready to seize on any lethargy from the home side.

"We're all professional footballers, and you've got to believe you can win any game, but we were realistic," said Caldwell.

"We weren't negative, but if we were being honest, we knew our chances of winning the game were very slim. We knew if we played to our absolute best, and they had an off day, then we had a chance."

Ade Akinbiyi cancelled out Didier Drogba's first-half opener in the 69th minute to send the game into extra time, and Caldwell was dismissed for a second bookable offence four minutes from the end of extra time.

Drogba, meanwhile, is suspended for the United game after admitting a Football Association charge of violent conduct for throwing a coin into the away end. He misses three matches.