4. Ray Kennedy
Already a league and FA Cup winner with Arsenal, Ray Kennedy was signed on July 12, 1974 by Liverpool boss Bill Shankly, who then shocked the football world by announcing he was stepping down as manager on the very same day.
However, the departing Shankly predicted: "There is no doubt Kennedy will do a good job for Liverpool. He is big, brave and strong. Kennedy will cause plenty of trouble to defences."
The legendary manager was right, of course.
Handed his debut away at Chelsea in August 1974, Kennedy combined with strike partner Phil Boersma to open his Liverpool account with a header just 22 minutes into a 3-0 win at Stamford Bridge. He would go on to score in each of his first three games for the Reds.
Shankly's successor Bob Paisley later converted Kennedy from a striker into a left-sided midfielder and he went on to become a Liverpool legend: winning five league titles, three European Cups, the UEFA Cup and League Cup in 393 games for the Reds.