First of all, the two teams that qualify for the group stage cannot be drawn together.
Secondly, the first qualifying team in the group stage can only draw the second qualifying team in other group stages.
Thirdly, when drawing lots, teams in the same league should avoid first.
Inter Milan are second in the group, and Paris is also second in the group. They can only compete with the first place in the other group. So it is impossible to draw them together.