VIENNA, Aug 28 (Reuters) - European Union foreign ministers meeting later this week, are unlikely to unanimously back a visa ban on all Russians, as would be needed to put in place such a ban, EU foreign policy chief Josep Borrell told Austria's ORF TV on Sunday.

"I don't think that to cut the relationship with the Russian civilian population will help and I don't think that this idea will have the required unanimity," Borrell, who chairs EU foreign ministers' meetings, told the national broadcaster.

"I think that we have to review the way that some Russians get a visa, certainly the oligarchs not. We have to be more selective. But I am not in favour of stopping delivering visas to all Russians."