He was the forgotten brother at Stamford Bridge but Thorgan Hazard has since made a name for himself in Germany.
The younger sibling of Chelsea star Eden Hazard swapped west London for Borussia Monchengladbach on a permanent basis in February 2015 - after initially joining the latter on a season-long loan that 2014-15 term.
The 23-year-old didn't make a single appearance for the Blues during his three years at the club but Roman Abramovich was shrewd enough to insert a buy-back option upon his sale.
According to Bild, Chelsea can re-sign the Belgium international for £13million - however, the clause expires on December 31, 2016.