6. Jon Flanagan
Jon Flanagan was once one of Liverpool's most promising youngsters, making his debut in 2011 at just 18 years old. The local boy impressed manager Kenny Dalglish and scored a run in the first team, playing in 23 Premier League games during the 2013/14 season. Since then however, Flanagan has appeared in just 5 league games for The Reds, and after falling behind Nathaniel Clyne and latest wonderkid Trent Alexander-Arnold in Klopp's plans, his contract has been left to expire.
Seven years after debuting for Liverpool, Flanagan has been released by Liverpool. This may be a blessing in disguise for the defender, allowing a permanent move to a club where he can legitimately challenge for a place in the first team. At 25 years old he is still a relatively young player with a lot to offer Gerrard at Rangers.
As a right-back, Flanagan is a solid defender, even earning himself the nickname The Scouse Cafu from the Liverpool faithful, and as demonstrated many times under Dalglish he can also function as a competent left-back. For Rangers this would be particularly important, as the side conceded twice as many goals as Celtic last season. This is something that will need to change if they are to challenge for the title any time soon.