Arsenal make the trip to the Sinobo stadium for the second leg of their Europa League quarter-final tie against Slavia Prague tonight.
The Gunners conceded a costly away goal in the 1-1 draw in the reverse meeting, and they must score tonight to stay in the competition.
Bernd Leno is an undisputed starter in goal, and he is expected to start.
Further forward, a solitary change is expected. Gabriel Martinelli found the back of the net in the 3-0 league triumph at Sheffield United, but he may make way for the return of Emile Smith Rowe after a thigh injury.
Predicted Arsenal line-up (4-2-3-1): Bernd Leno; Hector Bellerin, Rob Holding, Gabriel Magalhaes, Cedric Soares; Granit Xhaka, Thomas Partey; Nicolas Pepe, Bukayo Saka, Emile Smith Rowe; Alexandre Lacazette.