"I am certain Benitez is one of the best coaches in Europe," said Voronin.
"He is an extraordinarily shrewd strategist and tactician. A lot of exercises in training have a tactical direction.
"Everything is worked out down to the tiniest detail.
"Benitez may be the only coach on the continent who can change three, four or five players after the team has won by a distance.
"I don't think you will see that at Chelsea, Real Madrid or Barcelona. Our manager doesn't get stuck on 11 players."