Can someone provide some insight on what is going on with Celtic? To make it shorter - how come they lost that badly versus Legia?
I am interested because they are playing CL playoff against Maribor and I have some hope to finally get to see Slovenian team in Champions League again.
I haven't seen the games this season (other than highlights) so I'm not sure how much I can say.
As far as I can tell, the main issue is coming from the fact that they are trying to play quite an attacking system (4-2-3-1), but without good enough attackers to really threaten a team.
Then there is the problem that they are playing just two central midfielders, so they will be outnumbered in that part of the pitch a lot of the time. This is made worse by Scott Brown, their captain and best player, being out injured. That leaves them short of both numbers and ability in central midfield. Neil Lennon, when playing in Europe, would always play at least three, if not four, midfielders in order to not be dominated in that area of the pitch. When they play 4-4-2 against Aberdeen last season we completely dominated the midfield and beat Celtic pretty convincingly.
Their defence, in thory, is reasonably strong, but they seem to have been making horrendous errors due to a lack of concentration in the last couple of games and they are left exposed due to the lack of presence in midfield.
The players and their new coach generally don't seem to have understood each other yet. That situation isn't likely to improve after the games against Legia.
They are undoubtedly very vulnerable just now and Maribor have to believe they have a great chance to get through.