Bradley Johnson and Amari'i Bell are both self-isolating and are expected to miss Rovers’ next two matches.

Midfielder Johnson, previously an ever-present in the side, was missing for the midweek home defeat to Reading after displaying coronavirus symptoms.

Tony Mowbray has now revealed the 33-year-old is self-isolating and won’t be available for this weekend’s trip to Swansea City, and could well miss the next two matches before the international break against Middlesbrough and QPR.

Left back Amari’i Bell would also have been in contention to start against the Royals, but he too was pulled from the squad after reporting that he too was displaying symptoms for Covid-19.

And he is expected to follow a similar timeframe to that of Johnson as Rovers’ unavailability issues look set to continue.

The manager said: “They’re isolating. I’m not sure where the days are, I leave that to my doctor who will tell me when they’re available.

“Generally I focus on the next game and what I do know is that those players won’t be available for the next game.

“There’s two games left after this one before the international break so I’m not sure whether they’ll be available or not.

“After Swansea I will start focusing on Middlesbrough and then after that on QPR.

“Sitting here I only focus on the lads we’ve got available and will re-assess after that.”

Thomas Kaminski and Daniel Ayala are both expected to miss out through groin injuries, while a back spasm could keep out Joe Rothwell again.

The midfielder was pencilled in to start against Reading after his period of self-isolation finished, only to suffer a back spasm that saw him withdraw from the squad hours ahead of kick-off.

“As I sit here now, the answer is no, there’s still training tomorrow but I wouldn’t be too hopeful on that,” Mowbray said of welcoming any players back into his squad.

“Rothwell is the only one potentially. It looks like a back spasm having sat on his sofa for 10 days so let’s hope that clears up, but he didn’t train today.”

Ayala limped off against Watford last week, and hasn’t featured in either of the two matches.

Asked for an update on the Spaniard, Mowbray said: “I think it’s something that until he’s ready, on the grass, kicking a ball, sprinting, running around poles, doing all the stuff he needs to do then he won’t be available to play.

“He’s not quite ready to do that.

“I can only ask every day who’s training and Daniel at this moment isn’t ready.”