5. Eden and Thorgan Hazard
For most of you, Eden Hazard needs no introduction.
The Belgian winger is one of the most talented footballers on the planet, with his dribbling skills and agility giving defences all over Europe nightmares. Aware of this, Chelsea snapped him up in 2012 for €35m.
What happened next is history as Hazard grew into the phenomenal player he is today. So when Chelsea discovered his younger brother, Thorgan, they didn’t waste a second in signing him.
Sadly, Thorgan’s time in London wasn’t a success and he soon left permanently for Borussia Monchengladbach in 2015 following a few loan spells.
The 26-year-old now stars for Borussia Dortmund in the Bundesliga, while Eden sealed a dream €100m transfer to Real Madrid in 2019.