Petr Cech has backed Arsenal to recover from their worst-ever European defeat and qualify for the Champions League knock-out stages.
The Gunners suffered a sobering 5-1 defeat away to Bayern Munich on Wednesday night to leave them bottom of Group F and with qualification to the last 16 now out of their hands.
Robert Lewandowski opened the scoring with a header in the 10th minute before a brace for Thomas Muller and goals from David Alaba and substitute Arjen Robben secured an impressive victory for Bayern.
Olivier Giroud pulled one back for the dumbstruck visitors, who were already four goals down when he buried an acrobatic volley.
Costly defeats to Dynamo Zagreb and Olympiacos before this mauling have left Arsenal with one win from their first four games and perilously close to elimination.
But goalkeeper Cech, whose last appearance at the Allianz Arena saw him lift the Champions League trophy as Chelsea beat Bayern on penalties, reckons everything is still to play for.
"Of course we can still qualify," he said.
"You win two games and we need to make sure the head to head against Olympiacos is in our favor and then we can go through.
"Everything is possible and we have two games to play. We have to regroup and continue fighting until the last minute."
Olympiacos scored a last-gasp winner against Zagreb on Wednesday that means any positive result for the Greek side in Munich in the next round of fixtures would kill off Arsenal’s hopes and allow the current top two to advance.