The next season champion league tournament will be a very tough one then this season due how so many clubs are prepare for the next coming season, apart from the Manchester city there so much teams that are are going to be tough as you mentioned them earlier expecially, a team like arsenal I'm expecting a good outcome from them. Because since there able to win the champion league this season; they want dominate the entire next coming season, and in my view arsenal can make that happen with how they improve their performance better, But nevertheless let us be wait and see what can actually happen in UEFA Champions league we can't make an early predict.