Massimo Luongo has been passed fit for QPR's home game with Wolverhampton Wanderers on Thursday.
The Australian missed the 3-0 defeat at Ipswich through illness but returned to training yesterday, playing in an inter-squad friendly.
And he will be able to run out at Loftus Road on Thursday night to take on Paul Lambert's strugglers.
“He went out but he's back and played yesterday. He looked fresh. That's about it. That's all I've got to worry about.”
Defender Steven Caulker is unavailable for the contest due to a hip injury but he could return for Rangers next week.
He added: “Steven Caulker is improving. He may be back in training next week but hips can be awkward.”
Wolves, who were taken over in the summer, have struggled after making wholesale changes in the squad with appointment Walter Zenga lasting just a few months with Paul Lambert taking over.
Holloway hasn't been surprised by the Black Country club's struggles.
He added: “I'm not surprised by anything. Mick McCarthy had them in the top flight.
“They got rid of him, gave it to his assistant and they went down two divisions. Leicester won the Premier League – anything can happen.
“It's a fantastic competition. The coaches are better and the Championship is thriving. It's a fantastic watch week in week out.
“Everyone has got good players and you can see someone who is second lose heavily to someone else.
“It's about being consistent out there day in day out, week in week out. Some days performances won't be what you want. I remember Newcastle's first two and how their manager was.
“Things can get better. You've got to give them a bit of TLC. I want our fans to do what they did last week. They stuck with them and kept going. They showed they cared and that's all you can ask.
“Some bits aren't quite right. Hopefully we can get a team out there that wears that badge with pride and we can end one goal up.”