From Michael Owen to Paul Ince - Meet the players who played for both Manchester United and Liverpool

Hopkin joined Manchester United in 1919 and scored eight goals in 41 appearances in his first season at the club.

After a rather underwhelming 1920-21 season, Hopkin joined Liverpool for £2,800 in May 1921, and went on to make 360 appearances for them over the next decade.

In less than a year after joining the Merseyside club, Hopkin celebrated a league title in his first season at the club, followed by a repeat of the same in the next season.

Scottish centre-forward Tommy Reid was brought to England by Liverpool in 1926, with the Reds paying a fee of £1,000 to sign him at that time.

Reid spent three seasons at Liverpool, scoring 30 goals in 55 appearances before joining Manchester United in January 1929.

He spent just over four seasons at United which turned out to be the best goalscoring years of his career as he netted 63 goals in just 96 appearances for the Red Devils between 1929 and 1933.

One of the great Scottish strikers in the the late 1920s and early 1930s, Tom Miller was signed for Liverpool in 1912 by manager Tom Watson.

His career, along with the rest of the footballing fraternity at that time, was interrupted during the World War I and he returned to Liverpool in 1919. Between 1912 and 1920, Miller scored 56 goals in 146 appearances for the Merseyside club.

Bitter rivals Manchester United signed Miller in September 1920 and played for the Red Devils for one season.

Another Tom Watson signing, this time in 1904, Tom Chorlton took some time to establish himself as a starter at Liverpool.

In the 1909-10 season, Chorlton didn't miss a single game for Liverpool becoming the only player to achieve that feat.

An expert penalty taker, he scored eight goals in 121 games for the Merseyside giants before joining Manchester United in 1912. Over the next two years, he could make just four appearances at Old Trafford.

Manchester born-and-bred, Thomas McNulty graduated from Manchester United's academy before making his senior debut for the club in 1949.

After making 59 appearances and helping United win the 1951-52 league championship, he joined Liverpool in 1954 for a transfer fee of fee of £7,000.

The full-back went on to make just 36 appearances for Liverpool in four seasons.

Manchester United signed Paul Ince from West Ham in 1989 before going on to win the Premier League twice, the FA Cup twice and the League Cup once during his six years and over 200 appearances at the club.

After a fallout with manager Alex Ferguson, Ince was sold to Inter in 1995.

The midfielder returned back home to join United's arch rivals Liverpool in the summer of 1997. In his two seasons at Anfield, Ince won no honours at the club before falling out with then Liverpool manager Gerard Houllier in shocking fashion in the summer of 1999 when the coach attempted to sign Marc-Vivien Foe without consulting him.

One of ten players to have scored 150 or more goals in the Premier League, Michael Owen is still the youngest player to have reached 100 goals in the Premier League.

After starting his journey at Liverpool, where he made over 200 appearances, scored 118 goals and won the Ballon d'Or in 2001, Owen joined Real Madrid's Galactico era in 2004.

He returned back to England a season later, joining Newcastle United, where he spent four seasons before joining Manchester United as a free agent in 2009 and winning a much dreamt-of Premier League title in the 2010-11 season.

Many other footballers from the years gone by switched clubs between Manchester United and Liverpool.

Ted Savage, who joined Liverpool in 1931 and left to join United midway through the 1937-38 season, was one of the first players to switch clubs.

John Sheldon was another player from the early 1900s who made the move to Liverpool from Manchester United in 1910. Sheldon made 26 appearances for the Red Devils between 1910 and 1913 before joining the Reds from Merseyside, making 147 appearances for them.

English striker Phil Chisnall started his career at United in 1959 under Sir Matt Busby, a year after the Munich air tragedy. He moved to Liverpool in 1964 and was noted for being the last player to have been transferred directly between Manchester United and the Merseyside giants. A unique legacy that Chisnall left behind was that he played under three iconic managers, Matt Busby at Manchester United, Bill Shankly at Liverpool and Alf Ramsey in the England under-23 team.

Allenby Chilton joined Liverpool as a youngster in 1938, but never played a game for the club as he moved to Manchester United later that year. He established himself as Sir Matt Busby's first choice centre-back and was also made club captain in the 1953-54 season.

Last on this iconic list is Peter Beardsley. The striker joined United for just one season in 1982-83, making no appearances for them, before moving to Vancouver Whitecaps in 1983 and later moving to Newcastle United in the same year.

In 1997, he joined Liverpool and went on to feature 131 times for them, scoring 46 goals.