Andre Villas-Boas admits his insistence he is at Chelsea for the long haul would carry more weight if publicly backed by the club's hierarchy.

The 34-year-old Blues boss reiterated he was confident Chelsea owner Roman Abramovich would not sack him should he fail to reach the Champions League quarter-finals and that his three-year project to revamp the squad had the Russian billionaire's "full" backing.

Ahead of Tuesday's clash with Napoli, Villas-Boas suggested he was beginning to sound like a broken record in his claims of unequivocal backing, and that the words would carry more weight "coming from the top".

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