The England Under 21 international striker was replaced by Shefki Kuqi in ths second half of the 3-0 FA Cup Third Round tie against Derby County, and has not trained since and also looks certain to miss tommorows training session.
Speaking to the Official Club Website, Town boss Joe Royle confirmed: "Darren has a sore ankle from the Derby game and is receiving treatment. It will probably be the end of the week before he returns to training but he should be okay for the Reading trip."