Arsenal's Krystian Bielik featured once again in first team training on Monday, rather than playing for the under-21 side later that evening.
With a match away at under-21 division leaders Newcastle, Bielik would have instead been required to travel with the rest of the squad to play at St James Park.
Wenger told the club's official website last week, answering a question about when German winger Serge Gnabry would return to action:
"Serge will play on Monday night at Newcastle, with Bielik. Bielik is coming along very well."
Gnabry, who was not present at Arsenal training and is recovering from injury, did start in the under-21 match, along with the likes of Dan Crowley and Gedion Zelalem.
What does this mean for Bielik?
No official reason was given for the change of plan regarding the 17-year-old. Bielik clearly had been due to play his first game in an Arsenal shirt against Newcastle, but there was a U-turn.
The situation regarding the defensive midfielder will become clearer on Tuesday night when Arsenal's first team face Leicester City.
Wenger may have decided he wants the Pole to feature on the bench, and if he does, the change of course will subsequently add up.
If not, there is another logical explanation. With the under-21 game away from home, Wenger could have made the choice to keep Bielik under watch close hand, desiring instead to be able to go and watch his debut match for the under-21s at their next home fixture.