Berlin - Thorgan Hazard, younger brother of Chelsea's Belgian star Eden, has decided to make his loan deal at Bundesliga club Borussia Moenchengladbach permanent, the club have announced.
Hazard, 21, like his brother an attacking midfielder, arrived initially on a season-long loan from Chelsea but has now signed a contract tying him to the German club until 2020.
"Over the last few months, Thorgan has shown the extent of his talent and we are delighted he has chosen to play for Moenchengladbach in the years to come," Borussia's sporting director Max Eberl said on the club website.
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The fee was believed to have been in the region of eight million euros ($9 million) for Hazard, who has been capped once by Belgium.
Moenchengladbach are on course to reach the last 16 of the Europa League, having won their first leg match away at Sevilla and are well-placed to qualify for next season's Champions League as they are currently third in the Bundesliga table.
Two weeks ago, Eden, 24, signed a new five-and-a-half year contract with Chelsea.