Queens Park Rangers manager Harry Redknapp said he is "in Jack Wilshere's corner" over the England players row.
The Arsenal midfielder said "the only people who should play for England are English people", leading to criticism on Twitter from cricketer Kevin Pietersen - who was born in South Africa.
However, Redknapp told BBC Radio 4's Today programme that he agreed with Wilshere.
He said: "I really feel that if we are going to allow lads to come in here at 17 years of age and suddenly within a couple of years they're eligible to play for England then we're going to end up...where youth teams are absolutely full-up with players that are bought in from other clubs abroad.
"We'll end up with no English kids in the team, I can see that happening in the future, where it'll be three of four English boys and the rest will be lads that have come in here at 16, 17 because they're the cream of the crop abroad."
"I'm absolutely with Jack," Redknapp added.
Former Tottenham manager Harry Redknapp has revealed he was conned into paying for three years of dinner, match tickets and travel expenses by a man who claimed to be a jockey.
In a section of his autobiography serialised in the Daily Mail, Redknapp describes how a man who said he was top young jockey Lee Topliss turned out to be a pub potwasher with a way with words.
The 66-year-old said he felt sorry for the prankster, whose racing tips turned out "more losers than winners", and ended up buying him dinner and taking him along to directors' boxes at matches.
The "little Irish rogue" was found out when Redknapp's agent friend met the real Lee Topliss at a race.
"I’m told he was working the same racket with Liverpool’s Glen Johnson, plus a couple of football agents and other managers," Redknapp adds.
QPR manager Harry Redknapp could face a trial after pleading not guilty to two driving offences.
He is accused of driving at 38mph in a 30mph zone in Poole, Dorset, last October.
Redknapp is also said to have failed to supply the driver's identity as required.
According to the Bournemouth Echo, prosecutor Charles Nightingale told the court Redknapp had not been able to ascertain whether he or his wife had been driving the car at the time of the alleged offences.
Harry Redknapp has admitted trying to keep QPR in the Barclays Premier League will be his toughest challenge yet.
He said: "I'm optimistic we can pull it off.
"I want to be successful here, really badly. I want to keep this team in the Premier League."If the players try as hard as I am going to try we'll be successful."
Redknapp confirmed a deal was being done to bring in long-time assistants Joe Jordan and Kevin Bond to assist him.
And he warned the players he would not tolerate a lack of effort.
"We've got to do better to give ourselves any chance of getting out of this mess," he said.
"I need 11 people with ability to put effort in. If they don't they're not going to play and I'll get 11 people who do."
The Telegraph's Henry Winter and the Mirror's John Cross are at Harry Redknapp's QPR press conference:
New QPR manager Harry Redknapp said he believes David Beckham could still play in the Premier League and has not ruled out trying to sign him to QPR. He told the BBC:
"I'm sure he could still play in the Premier League. I've not discussed it with the chairman so we'd have to look at that."
"He's a top fantastic player."We had him training at Tottenham and it was amazing to have him round the place. He is absolute class."
Queens Park Rangers' new manager Harry Redknapp watched Manchester United beat QPR 3-1 at Old Trafford. For a match report and analysis visit the ITV Sport website.
QPR Chairman Tony Fernandes has revealed that the QPR board had no doubts over making a move for Harry Redknapp after Mark Hughes was sacked.
He told the club website: