Wijnaldum has played played right across the midfield for Newcastle this season, and he has also been utilised as a number 10.
And Benitez admits that the Dutch midfielder’s talents can work against him, as he has not been given a run of games in the same position.
“That is the problem – because he is so good, he can play everywhere and do well,” the Spanish boss said.
“We were thinking about where to play him the other day, and we said: ‘His best position could be behind the striker’.
“But because he is doing well he can play on the right, he can play on the left.
“I think that his best position is behind the striker but we need quality now out on the pitch, so he can help in any position.”
Wijnaldum has started in Benitez’s first two matches as Newcastle boss, and he will have a crucial role to play over the rest of the season.
The 25-year-old was arguably the pick of the additions which the Magpies made last summer, as he has shown his class during his first campaign in England.
The Holland international has scored nine goals in 30 Premier League appearances to date, and he is one of the few Newcastle players who has generally performed to the best of his ability this term.
Newcastle will be relying on Wijnaldum to continue his good form for the remainder of the season, as they look to avoid the drop.
At the moment, Benitez’s side are in 19th place in the Premier League table with just eight games remaining for them to get out of trouble.