The 57-year-old Spaniard will not countenance entering into talks over extending his current contract at St James' Park, which will have a year to run at the end of the season, until the club has collected the 40 points he believes will secure Premier League survival.
However, he is already looking to how the current squad can be re-shaped if he remains at the helm.
Benitez, who takes his side to Leicester on Saturday sitting on 35 points, said: 'The main thing is to get 40 points. If we are there, it will be easier to start working on everything.
'But at the same time, we are already working on that, not just me, but also the scouting department, [managing director] Lee Charnley.
'We are trying to advance and be sure we make the right decisions for the future. But obviously you cannot say, 'We will do this or that signing' because you do not know [where the club will be].
'But you are working on names and on what you improve for the next few years. It is part of my responsibility. But it is not as if my future will change this or that.
'We will start working and we can make decisions and if everything is finished because we get 40 points.'