Well Newcastle indeed has a good chances of winning the good Champion league despite their current form and motivation the last time i checked their chances of winning their last match with Liverpool was an boost to their morale in the carabao cup final and are currently qualify for the playoff round in the UEFA league Europe this mean they have an advantage added,
Currently from my findings the Newcastle United are sixth in the premier league table with 47 point, just at the backs of Chelsea and Manchester United who are on the 4th and 3th roles Fulham's Brighton and Aston villa's are closely trailing behind making the competition for the top intense intense.
So because Newcastle won Liverpool in the Caraboa Cup they've suddenly turned Champions league contenders, that's funny. Mate Newcastle didn't even qualify for the Champions league this season and even if they did, they won't even last till this point, do you think they can challenge the likes of PSG, Bayern, Real Madrid, Barcelona and Atletico Madrid that just recently got kicked out of the tournament? Those are teams that are outstanding in their various leagues, Newcastle is not even top 4 in the Premier League Currently, it's just that they've had this motivation in the Caraboa Cup, I think they finished as runners up against United not too long if am not mistaken, maybe they used same motivation from that season and it helped them to win Liverpool but that doesn't mean they're good to be in the Champions league, well good for them they've booked a spot in Europea league play-offs, let's see what they'll do if they get there.