Simons has been nominated four times for the individual accolade this season.
Boniface, who won the Bundesliga Player of the Month award in August has been in fantastic form since switching Union St Gilloise for Bayer Leverkusen in the summer.
The striker has scored 14 goals and provided six assists in 20 appearances across all competitions for Xabi Alonso’s side this season.
“Boniface wins rookie of the month fourth time in a row - Punch Newspapers”