Karim Benzema limped off the field with half an hour played of Real Madrid's opening Champions League group game against Celtic after sustaining a knee injury.
The 34-year-old, who was considered a doubt ahead of the Group F match at Celtic Park, appeared to pull up after playing a pass and was seen in visible pain.
Benzema attempted to shake off the injury but remained on the field for just a few more minutes before being replaced by Eden Hazard, with the game still goalless at that point.
France international Benzema led the Champions League scoring charts with 15 goals last season and had four goals in five games in all competitions this term prior to Tuesday.
Madrid have a busy run of fixtures ahead, with LaLiga games against Real Mallorca and Atletico Madrid sandwiching next week's European clash with RB Leipzig.