The Football Association has warned England fans planning to attend Wednesday's friendly against Republic of Ireland not to take part in any offensive chants.
The two countries have a stormy relationship both on and off the field, with the previous encounter having to be abandoned after just 27 minutes due to rioting England fans.
Concerns have been raised over Wednesday's match, with one chant in particular - 'No Surrender (to the IRA)' - having strong political connotations between the two countries.
However, the FA will try to take preventative measures by sending an email to every fan with a ticket warning them against participating in such chants.
"Ahead of the Ireland fixture, on behalf of the FA, I would like to ask our supporters to please respect our opponents and welcome them in the right way," Roy Hodgson writes in the email, which will be distributed tomorrow.
"Wembley is considered the world over as the home of football and we ask those attending to not take part in any chanting - particularly of a religious or political perspective - which could cause offence to our visitors or fellow fans."
England fans were criticised for alleged racist chanting that took place during their match against San Marino two months ago, although the FA were not handed any punishment for the incident.
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