After a first LaLiga start at Alaves and scoring twice in the away win, Ceballos celebrated with friends in the evening.
Journal Gol says Ceballos and a band of friends and hangers-on went bar hopping, with the midfielder covering the bill.
"Hang on, this is so much!" he is quoted to have said, jokingly, when handed the bill.
Ceballos' partying did make local headlines, but Real sources insist president Perez is well aware of the midfielder's night out and had no problem with it.
"If he can't enjoy himself after a day like that, then when can he?" said one Madrid source.
Perez is happy for Ceballos, but there will be a word to the young midfielder not to make a habit of 'very public' nights out.