The 23-year-old striker has signed a two-year deal and returns to France after three years away.
Le FC Nantes est heureux d'annoncer l'arrivée de @33_augustin, désormais lié au Club jusqu'en 2022 ✍🟡🟢
Notre nouvel attaquant portera le numéro 2⃣0⃣.
— FC Nantes (@FCNantes) October 6, 2020
Augustin left Paris Saint-Germain for Leipzig in 2017, with the Germans paying a €13m fee.
After 67 appearances and 20 goals for Die Roten Bullen, he joined Monaco for the 2018-19 season.
Halfway through his Monaco loan spell, the deal was cancelled in order to let him join Leeds.
After just three appearances for Leeds, the former France under-21 prodigy was injured and didn’t play again.
Following a dispute with Leeds, who had made an agreement to sign Augustin for €21m if they were promoted, Leipzig have now let him join Nantes.
Augustin was considered one of France’s most promising players several years ago and now has a chance to fulfill his potential with Nantes.