The Scottish champions will have to negotiate the second and third qualifying rounds as well as the play-off round if they want to reach the group stage again.
Celtic currently have six teams with a higher co-efficient than them that could be seeded in the qualifiers, but it would take a bizarre set of circumstances for Celtic to be displaced by enough of them.
Out of the six teams, the likely Swiss champions Basle are almost certain to go directly into the Group Stage and the five other teams would have to win their title for Celtic not to be seeded.
Although Salzburg have already won their league and Steaua Bucharest are well clear in the Romanian League, three other teams are struggling in their respective divisions.
FC Copenhagen are third in the Danish league, Viktoria Plzen are second in the Czech league and 10 points behind Sparta Prague with six games to play. And APOEL are second in the Cypriot league, three points behind AEL Limassol with six games left.
It means Celtic will almost certainly have a less daunting path to reach the group stage again.