Jamaal Lascelles and Matt Ritchie have been passed fit to play against Barnsley.
Ritchie missed Newcastle United's 3-1 win over Brentford on Saturday through sickness, while Lascelles was forced off after feeling "weak".
But the pair will be available for tomorrow night's game at Oakwell.
United manager Benitez said: "Jamaal was a little bit sick. He's fine. Matt Ritchie's fine."
Daryl Murphy is also close to a return from a calf injury, while Rob Elliot is also closing in on a comeback from a long-term knee injury.
Benitez added: "Daryl Murphy's completed a full training session, and Rob's training with the other goalkeepers."