Haaland missed victory at Crystal Palace with a stress fracture to his foot.
But Guardiola has insisted there is no break or fracture and says the striker will soon be back.
"The day after the game against Villa (December 6) he almost couldn't walk properly anymore," revealed the manager. "Then on Saturday I spoke to him, he said: 'I feel much better, I can walk, I'm not in any pain'.
"So we have to see how he's doing from day to day."