The sides were only separated by an 82nd - minute Ronaldo header in Lisbon on Friday night .
Paris St Germain star Ibrahimovic remains upbeat about Tuesday 's second leg in the Friends Stadium in Solna , northern Stockholm .
The sides were only separated by an 82nd - minute Ronaldo header in Lisbon on Friday night , but Paris St Germain star Ibrahimovic remains upbeat about Tuesday 's second leg in the Friends Stadium in Solna , northern Stockholm .