Which Arsenal player must start against Bayern Munich?

Arsenal host Bayern Munich in the first leg of the Champions League quarter-final on Tuesday.

Mikel Arteta has nearly a full squad to select from, with Jurrien Timber the only player expected to miss.

Having conceded five times in the last three meetings with the Germans, the Gunners will have to be at their best.

Which player must start this game? Let us know your thoughts in the comment section.