Manchester United and Liverpool have largely had the pick of the Premier League's best players over the years - although there is often a power struggle between the two clubs.
Fifteen years ago, United were top of the tree and the more attractive proposition. These days, Jurgen Klopp's Reds are the outfit young players would rather join.
Liverpool learnt the hard way that the Red Devils were the team to play for back in 2009 when they came close to signing a young Cristiano Ronaldo from Sporting Lisbon, only to miss out on him by the skin of their teeth.
