Former Germany youth international Agyemang Diawusie passed at the away of 25 due to 'natural causes'.
The tragic news was announced on Tuesday by his club, German third division outfit Jahn Regensburg.
He played for a number of clubs in Germany, including RB Leipzig, while he played for Germany's Under-15s and Under-19s sides.
German publication BILD have reported that the right winger died of natural causes.
His last game came on November 4 against 1860 Munich, where he was substituted after 39 minutes after complaining of breathing problems.
Jahn Regensburg footballer Agyemang Diawusie died aged just 25 of 'natural causes'
Diawusie represented Germany at youth level and spent most of his career in his homeland
However, it is unclear whether this had any part to play in his death.
Jahn Regensburg, posted a statement yesterday which read: 'This Tuesday, SSV Jahn received the terrible news that Jahn professional Agyemang Diawusie died at the age of 25. The club is shocked and deeply saddened by this tragic event.
'The Jahn family mourns with the bereaved and their thoughts are with Agyemang's family, relatives, close friends and companions. Because of the terrible situation and out of respect for his family, we ask that their privacy be respected.'
Tributes have flooded in across German football with clubs including Eintracht Frankfurt, Hamburg and Stuttgart all expressing their condolences to his club, family and friends.
Diawusie only returned to Regensburg in July after coming through the club's academy as a youngster.
He made 16 appearances across all competitions for the team this season.
After playing for RB Leipzig's Under-19s, he then moved to German third tier side Wehen Wiesbaden.
Diawusie also played in Germany's second division for Dynamo Dresden, and had a brief spell in Austria at SV Ried.
Diawusie (left) was subbed in his final game after complaining of breathing problems
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