RANGERS have issued a statement on the club's website warning their supporters making the trip to Portugal to be on their best behaviour for their latest Europa League fixture.

The Ibrox club have been sanctioned twice by European football's governing body this season for racist behaviour and Rangers have urged their fans not to sing any songs that could result in further punishments.

The statement read: "Rangers takes this opportunity to remind supporters, especially those travelling to Portugal for the Europa League match against Porto, that they have a duty to represent the Club in the best possible way.

Glasgow Times:

READ MORE: Rangers ordered by UEFA to close section of Ibrox over 'racist behaviour'

"There must be no singing of songs, or behaviour which UEFA could deem unacceptable and the Club urges all our fans in Portugal to do everything possible to portray themselves and Rangers in the best possible light. Remember that UEFA has already imposed a sanction on Rangers so we must be vigilant and give them no cause to take further and more serious action against us.

"The behaviour of our fans in recent times has been exemplary but it is i important to maintain those standards at home and abroad. At all times we must be aware that whatever we do, both inside and outside the stadium today and tomorrow, our behaviour will come under the closest scrutiny.

"Having said that, however, this fixture also provides another opportunity for Rangers to be showcased as a modern, all-inclusive Club. Let others fall foul of the authorities – we have seen what happened in Bulgaria just more than a week ago and there is now an investigation into a racist slur against one of our own – while we concentrate on supporting Steven Gerrard and his players in the correct way.

Glasgow Times:

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"Be loud and be heard and hopefully celebrate a victory with the team at the end of the match but please, keep in mind that UEFA’s view of racism is wide ranging, which means singing or behaviour that could bring much more serious repercussions for the Club must be avoided.

"In the same way the players are ambassadors for our Club so, too, are we, the supporters. So enjoy Porto, enjoy the game and together let’s promote Rangers positively. Let’s set higher standards and continue to demonstrate that Rangers is for Everyone, Anyone."