Teams from the same country or from the same first round group could not be drawn together.
The top two teams in each group advanced to the quarter-finals.
Seeding was determined by the UEFA coefficients[1] and participants' first group stage positions.
Group runners-up were seeded to Pots 3 and 4 accordingly.
Notes Based on Article 7.06 in the UEFA regulations, if two or more teams are equal on points on completion of the group matches, the following criteria will be applied to determine the rankings:[2]