Messi was City's downfall at Camp Nou two weeks ago.
Manchester City plays Barcelona on Tuesday.
Team are unbeaten in 14 games in all competitions.
The goalkeeper is now 34 years old.
Manchester City was beaten 4-0 at the Camp Nou.
Ronaldo won Euro 2016 and the Champions League this year.
Wenger has long been linked with the England manager's role.
Neymar moved to the Camp Nou from Santos.
Aguero scored a hat-trick in the Champions League.
Spurs lost 2-1 to AS Monaco.
Spurs play Monaco on Wednesday in the Champions League.
Wenger praised the performance of goalkeeper David Ospina.
Arsene Wenger is taking his side to Paris for a tough fixture.
Wenger's Arsenal take on PSG in UEFA Champions League on Tuesday evening.
Ronaldo is in his eighth season at Real.
Guardiola's City face United on Saturday.
Guardiola is the new manager at Manchester City.
Ronaldo won UEFA's Best Player in Europe award.
Ronaldo is returning to the Bernabeu after a post-Euro 2016 break.