The lateral defender has committed to four seasons with this Liga NOS club.
After joining ASSE in July 2017, Saidy Janko is now leaving the Stéphanois club and joining the recent champion of Portugal that has qualified for the next edition of the Champions League, with which he has signed a contract for four seasons.
The Swiss right-back has played 22 matches wearing the jersey of the Verts, 22 of which were in Ligue 1 Conforama.
ASSE wishes him much success in this next phase of his career.