Manchester United manager Ralf Rangnick said his side's 4-2 win at Leeds was the "perfect response" to reports of unrest in his squad.
"We knew that it was an important win today," said Rangnick.
"That was the best possible answer the team could give."
He added: "It was perfect with regard to maturity, unity and the best reply that they could give to some articles last week that there was some disruption in the locker room."
Maguire was handed the captaincy by former boss Ole Gunnar Solskjaer two years ago, but reports suggest his authority has been undermined by 37-year-old Ronaldo's return.