The Portuguese striker sat down for an explosive interview with Morgan, touching on several pain points at Old Trafford.
Cristiano Ronaldo, 37, lauded Arsenal as a team he likes to watch, praising manager Mikel Arteta and the team at his disposal.
The United striker told Morgan concerning who he wants to win the Premier League (via TalkTV):
“Manchester [United] first and if not, Arsenal is some team that I like to see play. I like the team, I like the coach. I think they have a good team. If Manchester United don’t win the Premier League, I will be happy if Arsenal."
The Gunners currently sit top of the league heading into the 2022 FIFA World Cup tournament. They hold a five-point lead over second-placed Manchester City.
Meanwhile, Ronaldo's Manchester United trail Arsenal by 11 points as they sit in fifth spot.
The Portuguese icon's impact on the Red Devils has regressed this season amid the more withdrawn role he has been handed under Erik ten Hag.
Ronaldo has made 16 appearances across competitions, scoring just three goals and providing two assists.
Cristiano Ronaldo on Manchester United manager Erik ten Hag keeping him on the bench against City
Manchester United suffered a 6-3 defeat to cross-city rivals City on 2 October.
Cristiano Ronaldo spent the entire game sitting on the bench, watching the Red Devils falter at the Etihad Stadium.
Ten Hag was asked after the game why he hadn't brought the former Real Madrid attacker on.
The Dutch coach explained that it was out of respect for the five-time Ballon d'Or winner.
However, Ronaldo believes that Ten Hag was making excuses, telling Morgan (via the aforementioned TalkTV link):
"Excuses, I see as excuses. I saw many things that, I don't want to criticise him. He can have different opinion than me. They choose the players that they think is better for the team."
Manchester United hit form following their setback against Pep Guardiola's side and beat Tottenham Hotspur 2-0 on 19 October.
Cristiano Ronaldo started the game on the bench and was asked to come on as a substitute in the latter stages of the victory over Spurs.
He stormed down the tunnel in the 89th minute, refusing to come on.
The Portuguese forward has compared the fact that Ten Hag was willing to bring him on in the final three minutes of a game to his reluctance to do so against City:
"Okay, you don't want to put me on against Manchester City because of respect of my career but then you want to put me three minutes against Tottenham. It doesn’t make sense to me.”