The Spaniard is yet to decide whether to stay at Newcastle United.
Benitez has been a huge hit at Newcastle United since his arrival at the club back in March.
It is unknown whether he will stay at the club beyond this summer though following their relegation to the Championship.
He has a break clause in his current deal, and so far a decision has not been made on his future.
They are keen to keep the Spaniard, and reports this week suggested a deal was close to being struck between the two parties.
And now it transpires that the amount of transfer funds will be key to Benitez’s decision on whether to remain, according to BBC Sport.
After such a disappointing campaign, it is widely believe that the Magpies need to invest heavily in their squad this summer.
Indeed, they may be forced to, with several first team stars all reportedly seeking to leave the club because of their relegation to the Championship.
If that turns out to be the case, it is no surprise to find that Benitez is determined to ensure he has the funds to rebuild his squad should he stay.