Manchester United has been in the Barclay's Premier League for 24 years. Manchester City has been in the Barclay's Premier League for 20 years.
It is Manchester united.
Since 2000, Manchester United have won the Premiership 6 times.
Manchester united have never been relegated from the premier league. in 1974 they were relegated from the old first division
Manchester United have won 14 trophies in the past 10 years (since May 2004). These were the following: 2004- FA Cup, 2006- League Cup, 2007- Premier League, 2007- Community Shield, 2008- Premier League, 2008- UEFA Champions League, 2008- Community Shield, 2009- League Cup, 2009- Premier League, 2010- League Cup, 2011- Premier League, 2011- Community Shield, 2013- Premier League, 2013- Community Shield.
Manchester City won 2011-2012 Premier League. Manchester United won a few years ago. They are at the same level.
18 times since the last 50 years.
They will not for a few years at least as Chelsea, arsenal , Manchester united and Liverpool are to strong now.
In 13 years between 1981 and 1994, Bryan Robson made 345 Premier League appearances for Manchester United, scoring 74 goals.
Chelsea, Manchester United and Liverpool were big spenders in the past fie years.
Manchester United, with 9 Premiership Titles, Five FA Cups, Two League Cups, One European Cup, One European Cup Winners' Cup, One Intercontinental Cup, one UEFA Super Cup and Seven Charity Shields
Christiano Ronaldo joined Manchester United from Sporting Lisbon , and as Manchester have never been relegated for many years so neither has Ronaldo been relegated.