The Jamaican international, who signed for the club in July, was replaced after picking up an injury just minutes before the end of a reserve match against Sheffield United in midweek.
Boss Colin Todd told the Telegraph and Argus:``He over-stretched when he dived to make a save and strained his groin. I don't think it's anything too serious.''
The Bantams beat United 2-1 thanks to goals from Joe Colbeck and Craig Bentham.