The Mirror says Benitez accepts the heat is on after his winless three-game start as Roberto Di Matteo's replacement.
And he is set to react by restructuring his side against Danish minnows Nordsjaelland on Wednesday.
Brazilian midfielder Ramires is understood to be first in the Benitez firing-line with the interim manager deeply unhappy at his contribution.
The midfielder's discipline in a central midfield role has been questioned by Benitez, who is ready to sideline him.
But he has also been frustrated by the lack of different options in his attacking line behind misfiring Fernando Torres.
It means it is unlikely the three will start together in that attacking line, with Victor Moses, seen as more direct and purposeful, set for an extended chance to prove himself a genuine Chelsea player.