Kenyan international Ayub Timbe could miss Reading's away game against Leeds United in the Championship.
Timbe, who signed for the Royals on a short-term deal from the Chinese side Beijing Renhe, made his debut for the club after coming on as a second-half substitute in a 3-0 away win against Sheffield United last time out.
However, a chance to earn a start for the club this weekend is now hanging in the balance after manager Mark Bowen confirmed the winger had missed a couple of training sessions in the week, owing to a stomach upset and could miss the trip to Elland Road.