It should give them quite a test, according to Mikael Eriksson, who is tournament director.
Eriksson's assistant Tord Grip said Walcott's lack of experience would not count against him.
"It's too late to do something about it in this World Cup, " said Eriksson.
Eriksson was also quick to praise Notts County's achievement in winning the League Two title.
Eriksson's side have to win and I believe they will - because nothing else will do.
Three weeks of a daily diet of tuna and chocolate before hearing Eriksson's words of wisdom.
Expectations are higher than ever and Eriksson insisted he was desperate to win the World Cup.
BBC: SPORT | Football | World Cup 2006 | Teams | England | Sven's farewell
Eriksson's England delivered a performance that contained everything their lacklustre effort against Sweden in Saitama lacked.
His advice to Sven-Goran Eriksson was to keep the same team which had triumphed on Friday.
Sanchez was replaced by former Manchester City boss Sven Goran Eriksson earlier this week.
Coach Sven-Goran Eriksson has also dropped midfielders Emerse Fae, Gilles Yapi Yapo and Traore Lacina.
Eriksson also believes Lagerback would adapt his methods to suit the players at his disposal.
Eriksson seems set to ignore Fifa criticism and make a rash of half-time substitutions.
Mr Eriksson's claim relates to a time when Piers Morgan edited the Daily Mirror.
Eriksson's study shows how people can stumble when exposed to math outside their field of expertise.
WSJ: Carl Bialik: Don't Let Math Pull the Wool Over Your Eyes
You also wanted to know about Manchester City manager Sven-Goran Eriksson's tactics in training.
City manager Sven-Goran Eriksson said on Monday he would love club owner Thaksin Shinawatra to buy Ronaldinho.
"I saw him play against us in the Carling Cup when we lost 4-1, " Eriksson said.
Englishmen like Sam Allardyce, Alan Curbishley and Steve McClaren have been named as potential successors to Eriksson.
"He's been able to do a lot of things, such as cycling, swimming and running, " added Eriksson.
"This was a project over five years or more and I looked forward to that, " Eriksson added.
City recalled Elano in place of Stephen Ireland as Eriksson's team attempted to maintain their fine form.
And BBC Sport understands that former England manager Eriksson is poised to be appointed as Sousa's successor.
There have been calls for Eriksson to be sacked, among them from former England international George Cohen.
Ex-England coach Sven-Goran Eriksson and former Villa star Gareth Southgate are both also believed to be interested.
"If we have more problems than one, it will be players from the Under-21s, " said Eriksson today.
Eriksson said what was at stake in the Swedish courtroom was the future of the Internet itself.
And Eriksson acknowledged that his new side had a tough task ahead when they arrive in South Africa.
Several names are thought to be in the running, including Sven Goran Eriksson, Avram Grant and Alan Curbishley.
Eriksson was particularly pleased with Benjani Mwaruwari, who scored on his City debut following a move from Portsmouth.
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