Flat-track bullies Celtic continue descent into European irrelevance
BBC Scotland's Tom English reviews another frustrating night in Europe for the Scottish champions.
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O'Neill laments marginal calls, but is Celtic simply not good enough?
Martin O'Neill cited refereeing decisions and near misses after Celtic's Europa League defeat by Celta Vigo. But former players say the deeper problem is that the team is not good enough at this level.
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