I believe that there are many things to say about this game but I will go in favour of a clear-cut option due to the goal-scoring abilities and capabilities of both teams.
Bayern has scored at least 3 goals per game in 5 of its last 6 games while it has scored at least 4 goals per game in its last 6 home games.
Olympiacos has scored at least 2 goals per game in the 11 games that followed after its home defeat from Bayern with 0-3 in the first game between the 2 teams for the group.
Other than that, a point will be enough for Olympiacos (either today or in its last game against Arsenal in Greece) to make it through to the next round of the competition.
Bet: goal-goal (2.10) @ BET365