The Royals are facing several ailments in the camp at the moment, according to Mark Bowen.
George Pușcaș had to be withdrawn with a shoulder problem on Wednesday night, while Andy Yiadom is set to be a longer-term absentee for the Royals after not being included in the squad in midweek.
Speaking after Reading's game against Barnsley on Wednesday, the manager said: "We had a bad injury with George Pușcaș – we’ll have to see how his shoulder is. We haven’t been lucky with injuries lately so we’ll be keen to see what the situation is on his shoulder.
"It doesn’t look good. I spoke to him briefly – I’m not a specialist but it looks like it might have been a dislocation.
"Jordan Obita got a bad dose of cramp against Barnsley, and with the way that the game was going, I needed to make sure we were solid at the back and couldn’t afford take the chance of leaving him on – so as soon as it hit him, I made the change.
"Liam Moore was a bit sore too – he hopes that the pain was coming from his back rather than any kind of tear. But he was a bit sore after the game.
"Andy Yiadom is likely to be out for a significant time – six or seven weeks. When it’s a length of time, it then depends on how quick a healer he is.
"Things are conspiring against us a little bit on that front but we can’t feel sorry for ourselves. We wipe ourselves down and recover and we’re getting ready for Stoke City on Saturday.
"We have been unlucky with injuries at the moment, but one thing on the horizon is that John Swift seems to be recovering a bit quicker than we thought. So if not this Saturday, with some luck he’ll be ready for the following Saturday and the Christmas games."