The summer signing from Oxford, who had previously been struggling with a groin problem, was due to start at Cheltenham on Saturday but injured his knee in training.
Boss Guy Whittingham told The News: 'It's tough on Tom. He's got a bit of bone bruising in training.
'His knee hyper-flexed as he landed awkwardly after jumping up for a routine header. So it will be a couple of weeks out for him, probably, as we need to give it a bit of time.
'He has not been very lucky with injuries so far."