Is the Chisnall match a friendly like they have been previously?
Reigning Premier League champion Van Gerwen has been sidelined with a back injury from Night Five of the season, meaning that he misses out on his clash with James Wade.
The 2009 champion will now meet Chisnall as the world number six plays twice in Exeter, returning to the stage in the final game after opening proceedings against Raymond van Barneveld.
Chisnall is one of three players sat on two points at the foot of the Premier League table following the opening four weeks, and knows that his unexpected double in Exeter is a chance to boost his hopes of avoiding elimination.
"It's a shame that Michael's injured but I've got to try and make the most of it on Thursday," said Chisnall.
"I've got to see it like one of the nights later in the season when you would play twice anyway, and hopefully I can pick up points in both games. If I have a good night it could be massive for my season."