6) Boudewijn Zenden
Spent two years at Chelsea in the early 2000s, playing 59 times and scoring four goals. He joined Middlesbrough and impressed enough to earn a move to Liverpool in 2005. Spent two years with us, winning the FA Cup.
5) Yossi Benayoun
Joined Liverpool from West Ham in 2007 and enjoyed a successful, albeit trophyless spell at Liverpool, playing 134 times and scoring 29 goals. He spent three years at Chelsea but made just 24 appearances in total.
4) Glen Johnson
Spent much of his early career with Chelsea, having joined them from West Ham in 2003. Played 41 league games before joining Portsmouth. He switched to Liverpool in 2009 and has since made almost 200 appearances.