Chelsea have agreed the sale of Thorgan Hazard to Bundesliga side Borussia Monchengladbach.
The 21-year-old Belgian has signed a five-year contract after impressing on loan this season. The fee is reported to be in the region of £8 million.
Chelsea have inserted a buy-back clause in the deal and will monitor his progress. It seems they have included the buy-back clause to stop a recurrence of the Nemanja Matic situation, where they paid £21 million to re-sign the Serbian from Portuguese side Benfica.
Hazard, the younger brother of Chelsea playmaker Eden, joined Chelsea in the summer of 2012 from French side Lens, although he never made a first team appearance.
Thorgan spent two years on loan to Belgian side Zulte Waregem, where he was voted their player of the season in the 2013/14 season where he scored 17 goals in 53 games in all competitions, including a goal against Wigan Athletic at the DW Stadium in the Europa League.
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Having represented Belgium across U15 to U21 levels, Hazard made his senior team début in May 2013 against against the United States in a 4-2 win. He replaced then Chelsea team-mate Romelu Lukaku as a second-half substitute.
He was one of seven standby players for Belgium's 2014 World Cup squad.
While playing for Zulte Waregem for two seasons, Hazard first won the Belgian Golden Shoe for being the best footballer in the Belgian Pro League and secondly, he won the prize for Best Professional Player in May 2014.