Nigel Pearson could be forced into a change for this midweek encounter with Timm Klose likely to start ahead of Rob Atkinson, who suffered a knock on Saturday afternoon. The Robins remain without four other first-team players, including central midfielder Han-Noah Massengo. Expect a couple of changes from the Luton camp in midweek following a frustrating afternoon against Preston. Striker Cauley Woodrow is one of the options Nathan Jones could call upon, while centre-back Tom Lockyer is also in contention for a recall. Jones confirmed that Harry Cornick and Luke Berry have both suffered injuries and will miss the trip to Bristol in midweek.