By James Agberebi:
Former Arsenal star Nwankwo Kanu has no doubts that the club will qualify for the UEFA Champions League round of 16.
The Gunners will have to score two unreplied goals against Olympiakos or win by a one-goal margin other than 2-1 to progress into the first knockout stage.
In the reverse fixture, Olympiakos surprisingly defeated Arsenal 3-2 at the Emirates.
Ahead of tonight's game, Kanu said the quality of players Arsenal possess should give them the edge.
"We are going to qualify after tonight's game, the team know how important the game is, and we got the players to do it. Come on Arsenal!" he wrote on his Twitter handle.
Failure by Arsenal to get a favourable result will see them join Manchester United in the Europa League.