Bayern Munich host Olympiacos in the Champions League on Tuesday looking to win Group F with victory, although a draw will send both sides through and eliminate Arsenal.
The Gunners need Pep Guardiola's men to secure a victory as well as beat Dinamo Zagreb in their match if they are to stand any chance of progression to the last 16 ahead of their matchday six clash with the Greek side.
Bayern romped to a 3-0 victory in Greece in the reverse fixture with Thomas Muller's double and a Mario Gotze goal doing the damage.
Olympiacos' derby match against Panathinaikos was called off due to crowd trouble. Marco Silva's side are on a stunning run of form though, having won 10 and drawn one of their 11 games since the loss to Bayern in September.
"You have to work hard for every single victory," he said. "Our opponents make it difficult for us, the back five is quite popular at the moment.
"Our opponents try everything, so we have to give 100 per cent in every match. We played reasonably well [against Schalke] but it was annoying to concede the equaliser from a counter-attack."
David Alaba is a doubt for the game after injuring his ankle in the win over Schalke, as is Juan Bernat (groin).
"We came to play a football match and we leave very disappointed," he said.
"We wanted to play. We are very disappointed that this battle was cancelled because of things happened that have nothing to do with football."
