It's been a fantastic season for the 19-year-old since joining us from Grasshoppers Zurich in August.
It only took the left-sided player until October to make his Premiership debut against Everton at Goodison Park and he went on to make 31 appearances in all competitions, scoring one goal.
To cap it all, he also made his full Swiss debut against France in a World Cup qualifier in front of 80,000-plus at the Stade de France.
JSM member Jack Patmore presented Reto with his trophy before the final game against Blackburn on Sunday.
Reto Ziegler has been named our JSM Young Player of the Year.