Defender Jamie McCombe is set to miss Huddersfield's week-long pre-season trip to Scotland because of a back complaint.
McCombe, together with Scott Arfield and Joel Lynch, missed Town's 1-0 friendly win over Guiseley on Saturday.
"Jamie has got a slight problem with his back and it looks likely that he will miss the Scotland trip," Terriers boss Simon Grayson told the club's official website.
"Scott is still recovering from his ankle injury so he too will be missing, but Joel Lynch will certainly be with us and will hopefully be involved in the games."
Huddersfield continue their pre-season preparations against Kilmarnock on Wednesday.