Andre Villas-Boas thinks it is "incredible" Chelsea sacked Jose Mourinho just seven months after winning the Premier League title. The 38-year-old manager was bemused by Blues owner Roman Abramovich's decision to discard the most successful coach in the club's history.

Villas-Boas enjoyed a nine-month spell in charge of the Stamford Bridge club earlier in his career and said Mourinho's dismissal continued a trend at Chelsea. "The only thing that has been quite incredible to see is that [sacking] was applied to everybody. It was applied for their dearest coach and their most successful coach," he told beIN Sports.

"So in the end, we have seen nothing different. Roman has sacked basically every coach he had and is no different – it happened even to the best. The same criteria he applied to me, to Rafa Benitez and for all the other coaches, to [Carlo] Ancelotti and now he has applied to Jose as well. And it's [now] a new chapter."

Villas-Boas is currently in charge of Zenit St Petersburg, but confirmed in September 2015 that he will leave the Russian club at the end of the 2014-15 season. However, the Portuguese boss said he has no desire to return to the Premier League "circus", having also been sacked as Tottenham Hotspur boss in 2013.

"It's a chapter that I've tried and things didn't go well. By the time that I left Porto I had a few offers, and I probably chose the club that I shouldn't have gone to [Chelsea]. It's a bad experience and it's in the past," he said.

"Tottenham, I really enjoyed the first year, and by the time I left we had almost as many points as in the season before when we broke the points record. But these are things that people don't evaluate, only I know about. But it's the reality of football.

"The Premier League is a circus, it's constantly changing. It's full of emotion, ups and downs, unpredictability and this makes it the spectacle that it is. That chapter is gone for me and I'm looking for more stability right now."