Top 10 most profitable transfers of all time

#9 Aymeric Laporte - Athletic Bilbao to Manchester City

Manchester City v West Bromwich Albion - Premier League

For a club with the financial power of Manchester City, the fact that their record signing is a defender speaks volumes. To be City's most expensive player ever, also points to a player being something special.

Pep Guardiola himself said that Laporte was 'cheap', saying "All teams work to improve their teams. When you see Laporte's performance, people think it's expensive, and you think 'wow, it's still cheap."

Aymeric Laporte has all the best qualities of a Basque defender, tough-as-nails yet very elegant with the ball at his feet. If his debut performance is anything to go by, the release clause of €65 million that City triggered will be viewed around Europe as a bargain in the future.

Fee Paid: €0m

Fee Sold: €65m

Profit: €65m