With the big news breaking today that Leo Messi will be leaving Barcelona, the sporting world has gone into overdrive suggesting where he may end up.

From Paris, to Manchester, to even Los Angeles, there's no shortage of quality internet work being done. While in soccer, it's not uncommon for players to move, the size of the name in this scenario warrants a double take.

It's gotten us thinking. Over the years, the AFL has increasingly gone down this path, with player movement in the off-season becoming the norm.

Related: Has Free Agent Saint played last game with the club?

With this in mind, we decided to take a look at the some of the biggest moves the AFL has ever seen.

Not just in size of the name, the money or the destination. But in terms of the impact that it had. Here are the ones we think have created the biggest splash over the years.

8. Tom Mitchell

Yet another who moved and would win a Brownlow Medal. In his final couple of years at Sydney, 'The Pig' would get so much leather poisoning that it appeared the only cure was a move back to hometown Melbourne.

The Hawks were waiting and swooped, their intent being to match Geelong and recruit for the now. The move has had big ramifications, with the Hawks now in a rebuild phase, while the Swans have a plethora of exciting youngsters.

MELBOURNE, AUSTRALIA - SEPTEMBER 24: Tom Mitchell of the Hawks poses with the 2018 Brownlow Medal at Crown Entertainment Complex on September 24, 2018 in Melbourne, Australia. (Photo by Quinn Rooney/Getty Images)

Had this move not occurred, it's easy to imagine things would be very different for both clubs.