Dele Adebola is expected to replace Kyle, Jay Tabb deputise for Thornton, and Adam Virgo come in for Hall.
Cardiff will give late fitness tests to Joe Ledley and Kevin McNaughton, who has been given the all-clear to resume following a head injury.
Top scorer Michael Chopra has been resting a leg injury this week but is expected to be fit.
Read Michael Chopra's pre match comments from the Western Mail