The Frenchman was not spotted during a training session on Thursday, though it has been reported that he was taking part in an individual programme away from his team-mates.
Barcola has been an ever-present for Liverpool in the Premier League since signing from Paris Saint-Germain in a blockbuster £123million transfer over the summer and can maintain that record after resuming full training on Friday.
Bradley Barcola is pushing to reclaim his place in the Liverpool XI
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That forced the winger to miss out on Tuesday night and Iraola is unsure as to whether a return is possible as the Reds welcome Brighton to Anfield on Sunday afternoon for their second of four home matches in a row across three different competitions.
Iraola can also hand a recall to Florian Wirtz after he scored as a substitute in midweek, most likely for Trey Nyoni in a change that would see Ryan Gravenberch drop back into a more natural central midfield role alongside Alexis Mac Allister.
Confirmed team news
Liverpool XI: Alisson; Araujo, Jacquet, Van Dijk, Kerkez; Gravenberch, Mac Allister; Barcola, Wirtz, Gakpo; Isak
Subs: Mamardashvili, Gomez, Wataru Endo, Chiesa, Tsimikas, Nyoni, McConnell, Koumas, Ngumoha
Brighton XI: Verbruggen; Kadioglu, Dunk, Vuskovic, Boscagli; Gross, Andres; Gomez, Ayari, De Cuyper; Kostoulas
Subs: Steele, Hadjam, Hinshelwood, Rutter, Promise David, Osman, Costinha, O'Riley, Yalcouye
Injured: Szoboszlai, Frimpong, Ekitike, Leoni, Bradley
Doubts: Munoz
Time and date: 2pm GMT on Sunday October 25, 2026
Venue: Anfield
How to watch: Sky Sports