UEFA general secretary David Taylor has warned that forming a Great Britain football side for the Olympics could see Scotland 'disappear off the international stage'.
Calls are growing for the Home Nations to come together to field a British side in the London 2012 Games.
Yet there remains much opposition and Taylor, a former chief executive of the Scottish Football Association, fears Scotland could lose their footballing independence as a result.
'It is the quickest way for Scotland to disappear off the international stage,' he told BBC Sport, speaking as a Scot rather than on behalf of UEFA.
'It is about the identity of the countries and it is a matter for the football associations.
'But, when I was in Scotland and chief executive of the Scottish FA, we had a clear and firm position and I understand that is still the position - that Scotland should not take part in an Olympic GB team.'
Taylor is wary of assurances from world governing body FIFA that Scotland's identity would not be compromised.
He added: 'FIFA is comprised 208 countries and we have had situations in the past when the privileges of the British associations, one of which is to compete separately in international football tournaments, has come under attack.
'What I would say is that we should be very careful about that as it's difficult to see what guarantees can be given.'