Right-back Eardley, who arrived at Bloomfield Road last week from Oldham in a £350,000 transfer, was in the Wales squad for Wednesday's friendly in Montenegro.
His availability is a boost to Holloway as his men go in search of their first Coca-Cola Championship win of the campaign.
Holloway made wholesale changes for Tuesday's 2-1 win at Crewe in the Carling Cup as Matt Gilks was given a run-out in goal.
First-choice stopper Paul Rachubka is expected to return between the posts and midfielder Charlie Adam should also come back into the starting line-up.
Striker Ben Burgess is hoping to shake off a minor knee injury but defender Danny Coid is definitely sidelined with a hairline fracture on his tibia.
Cardiff City manager Dave Jones can expect to have the Bluebirds' full array of internationals back for the trip.
Scotland duo David Marshall and Ross McCormack, Wales captain Joe Ledley and Hungary defender Gabor Gyepes all missed Tuesday's 3-1 Carling Cup triumph over Dagenham due to their senior international commitments.
But Jones is set to have a full-strength side at his disposal this weekend as he looks to make it three wins from the club's opening three games of the season.
Marshall should return in goal in place of Peter Enckelman while midfielder Ledley is expected to come in for Gavin Rae.
But it remains to be seen whether McCormack will return to Jones' starting XI after it emerged Chris Burke, who is now fully fit, was due to start last weekend's 4-0 win over Scunthorpe before coming down with an illness that completely forced him out in midweek.
Mark Kennedy (calf) is out for just over a week and Kevin McNaughton (ankle) is also sidelined for over a month, meaning Tony Capaldi should keep his place at left-back after playing 90 minutes against the Daggers.
Sporting Life
