Arsenal striker Thierry Henry will miss the team's UEFA Champions League group stage clash against Hamburg after picking up a foot injury during training. While the injury, which was sustained during Tuesday's training, is unlikely to be serious, the loss of the French international is not the only change-up manager Arsene Wenger looks likely to make to his side. Keeper Jens Lehmann is back from suspension with forward Theo Walcott and new signing Julio Baptista also traveling with the squad. Wenger is keen to win since the Gunners have struggled during their Premiership campaign, having yet to win after drawing 1-1 against Middlesbrough during the weekend.