Soccer:Andre Villas-Boas is unsure if he has the backing of Chelsea owner Roman Abramovich and wonders if he will be sacked in the same way as predecessor Carlo Ancelotti was last May, the Portuguese coach said today.

“We are now in the exact same moment as last year,” the under-fire Villas-Boas told Portugal's TSF radio. “It is an exact copy. I think I have felt the confidence from Abramovich but ... the pattern of behaviour of the owner has led to a downfall (of coaches) in similar situations or even 'better' situations.

“What will be the reaction? It will be one of the two, a continuation of the project and full support or just the cultural pattern that has happened before. We don't know.”

Villas-Boas has come under increasing scrutiny in recent weeks with Chelsea in a form slump and media reporting a rift with several players. Today’s radio interview was the first time the 34-year-old

had questioned his Stamford Bridge future.

Villas-Boas has previously spoken of Abramovich's full support, saying the two men were committed to the coach’s three-year “project”.

Asked by TSF if he would be interested in a move back to Porto, the club he led to a Portuguese League-Cup-Europa League treble last season, Villas-Boas said he was concentrating solely on Chelsea.

“I am fully motivated to what I am doing and am not considering a move to Porto because I am too involved with what I am doing now,” he explained.