The Liverpool duo are joined on the shortlist by Mohamed Belloumi (Hull City), Jayden Bogle (Leeds United), Kevin Schade (Brentford), Antoine Semenyo (Manchester City), and Brighton & Hove Albion pair Pascal Gross and Charalampos Kostoulas.
Isak scored three goals in as many league appearances during the month, while the ever-present Jacquet was part of a Reds back line that did not concede a goal.
Voting for the award is now open here.