Blackburn Rovers striker Leon Best has given the club an injury headache ahead of the new season after he suffered a knee injury in Blackburn's 2-1 win over AEK Athens.
Best joined Blackburn from Newcastle United earlier in the summer, but he was forced off just before half-time as his new club beat their Greek opponents.
The Republic of Ireland international will undergo a scan on Monday.
The 25-year-old had earlier scored Blackburn's second goal in the match before he was replaced.