Manchester United will give their fans until December 1 to decide whether they want to pull out of the trip to watch the Champions League match in Rome.
The weekend of violence in Italy that led to the football programme in the country being suspended has made some United supporters fearful of travelling to see the game against Roma on December 12 - especially after trouble in the Stadio Olimpico last season.
The club usually allow fans to withdraw their applications up until two weeks before an away European match and will extend the period until 11 days before their last match of the group stage.
United will also keep in touch with Foreign Office about their advice on fans travelling to Italy.
A club spokesman said: 'For every Champions League game there is a period beforehand where people can cancel. We are not change our position on the Roma game unless we are advised to do so.'
Last season, United accused the Rome police of 'serious over-reaction' last season after baton-wielding officers waded into visiting fans at random.
Eleven fans, some with stab wounds inflicted by Roma 'ultras', were hospitalised.