Reading are braced to be without defender Matt Miazga for a lengthy period as they prepare to face Bristol City in the Sky Bet Championship.
Miazga left the ground on crutches after suffering an apparent ankle ligament injury during the weekend’s FA Cup draw with Cardiff and was due to undergo a scan on Monday.
Sone Aluko could make his first league appearance of the season on Tuesday after completing the game against Cardiff.
Aluko has played three FA Cup ties since returning to the club after a year-long loan spell in China.
Bristol City manager Lee Johnson will be without defender Tomas Kalas for the trip to the Madejski Stadium.
Kalas suffered an injury in the FA Cup tie with Shrewsbury on January 4 and Johnson believes the 26-year-old is a week to 10 days away from a return.
Midfielder Adam Nagy has a minor ankle problem but may be fit to return to the squad.
Johnson is keen to bring in a striker before the transfer window closes, with Antoine Semenyo possibly going out on loan if that occurs.