ijjysmith
Calm
If he reverts to a more defensive system then Conor McLaughlin and Paddy McNair may come back into the team, as could target man Kyle Lafferty.
Germany coach Joachim Low also has a dilemma over whether to persist with out-of-form Mario Gotze up front or instead play striker Mario Gomez.
Jerome Boateng, Sami Khedira and Mesut Ozil are one booking from a ban.
A victory would make Northern Ireland mathematically sure of advancing. They would top the group if they win and Poland fail to record a victory.
They already have three points and cannot finish lower than third. A draw is likely to be enough to ensure progress to the last 16.
Even defeat may see Northern Ireland advance as one of the best third-place sides, depending on what happens in other groups.
Germany already have four points - which is likely to be enough to take them through to the last 16. They will guarantee progression to the knock-out stage if they avoid defeat.
