John Egan was feeling unwell when he came off in Sheffield United's convincing win over Burnley yesterday.
Blades boss Chris Wilder has ruled out an injury and said: "He's okay. He just didn't feel too well."
That is a boost for Ireland boss Mick McCarthy as Egan will be a first-choice centre-back in the all-important upcoming Euro 2020 qualifier against Denmark.
Matt Doherty's knee injury sustained in Wolves' 1-1 draw with Arsenal yesterday is not believed to be serious.
With skipper Seamus Coleman suspended, he is poised to start at right-back against the Danes.
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