Foster can put his feet up for Saturday evening’s colossal semi-final clash between Steve Borthwick’s men and the Springboks thanks to a crushing 44-6 success over Los Pumas in Paris.
The 58-year-old expects an “interesting contrast of styles” in the other last-four fixture and is not bothered who the All Blacks face in next week’s showpiece match at Stade de France.
New Zealand barely broke sweat in booking an unprecedented fifth World Cup final appearance and now have the luxury of an extra day’s rest as they await the identity of their ultimate opponents.
“I’ll be watching it,” said Foster. “I’ll probably have some popcorn and sit there and watch it and I don’t care who wins. We’re very much in a focus-about-ourselves stage.
“One thing that extra day does give us, it gives us a bit of a chance to have a break mentally and not to spend too much juice worrying about if it’s them, if it’s them.
“They’re both good teams. South Africa have been playing some brilliant rugby the last few weeks and are clearly on top of their game.
“But we’ve also seen an English side that just build away quietly and are probably starting to understand how they want to play and they’re starting to get really good at how they want to play and believe in that.
“It will be an interesting contrast of styles.”