talkSPORT exclusive: Jamie Carragher says Gareth Southgate should not change the system for World Cup quarter-final v Sweden
Ex-England boss Sam Allardyce suggested the Three Lions should play a flat back four against Sweden

Former England international Jamie Carragher says he believes the Three Lions should not change their formation ahead of their World Cup quarter-final against Sweden on Saturday.
They face the Scandinavian side after edging past Colombia in a dramatic last 16 tie which saw England go through via a penalty shootout.
Gareth Southgate has used a 3-5-2 system in Russia which has seen Kyle Walker, John Stones and Harry Maguire form an effective partnership at the back - with Kieran Trippier and Ashley Young given more licence to go forward as wing-backs.
However, ex-England manager Sam Allardyce told talkSPORT that he feels they should ditch the current system to bring in another attacking for the Sweden game.
But Carragher, who represented England at the 2006 and 2010 World Cups, said he disagreed with this, claiming changing things up could upset the balance of the team.
When asked by talkSPORT's Adrian Durham and Matt Holland if he agreed with this potential tactical switch on Drivetime, Carragher said: "No, I do not agree with that at all. Changing the systems has been a weakness at tournaments in the past.
"We have got three attacking players behind Kane so putting Rashford in there may be too similar. It won't really change the creativity and may upset the balance."
Adrian Durham on why Southgate must stick with three centre backs against Sweden
However, Carragher suggested he could tinker with the team if there are any problems with the players' fitness.
Ashley Young could be replaced by Danny Rose after the Manchester United man picked up a knock during the victory over Colombia.
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Meanwhile, Dele Alli has appeared to lack the same zip on the pitch after sustaining an injury during the Three Lions victory over Tunisia.
Carragher added: "Dele Alli was really good in the first half against Tunisia but then he's missed some games with injury. I don't know if he's 100% fit. Maybe Southgate could tinker with the midfield and put in Loftus-Cheek but there should not be too many changes against Sweden.
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