Real Madrid  announced Ceballos suffered a hamstring injury 

Real Madrid has announced that midfielder Dani Ceballos suffered a hamstring injury during Wednesday’s training session. As always, the injury report doesn’t disclose how much time he will need to recover from this injury, but it looks like he will miss the whole pre-season stage as the injury is big enough to keep him out for around a month. Following tests carried out on Dani Ceballos by Real Madrid Medical Services, he has been diagnosed with an injury to the distal tendon in his right thigh. His recovery will be assessed.
Ceballos' injury comes less than a month after he renewed his contract with Real Madrid for a period of 4 years until the next 2027. Ceballos played 120 matches with Real Madrid over four seasons, in which he won 11 titles: two European Champions League titles, 3 Club World Cups, two European Super Cups, the Spanish League, the King’s Cup of Spain, and two Spanish Super Cups.