Eddie Jones has urged Japan to “go to the temple and pray” as he plans his attack on the team he presided over from 2012 to 2015.
In response, Jones issued a warning to the Brave Blossoms.
“Pray, pray, pray. Go to the temple and pray. Just pray, it’s the best thing. We’re going to be absolutely ruthless,” Jones said.
“If I was Japan I’d be worried. I wish we were playing tomorrow.
“We want to smash them, physically smash them.
“I know they’re going to come full of confidence. I’ve heard some of the things they’ve said, they’ve been a bit cheeky so look out.”
Jones plans to name his strongest possible side, though he may be without several key players.
Jones also gave insight into how England would prepare to take on Japan.
“Sushi and sake,” he said. “It’s not logical (to rest players). That’s illogical.
“How am I going to train them? I’ve got three days to train them. It’s a good test for us to see how cohesive we can get in a short period of time, which mimics the World Cup.
“Japan are the highest kicking team in the world, they’ve got a really good defence system and they’ve got some good young players coming through.
“We’re taking it seriously and that’s why we have to be absolutely ruthless about the game.”
Japan and England have met just once before, with Saturday’s match set to be their first encounter in over 30 years.
Their only meeting came in Sydney during the pool stages of the 1987 Rugby World Cup, with England running in 10 tries to win 60-7.
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