The 26-year-old joined Eagles towards the end of last season after he was released by Platinum Stars midway through his contract due to off-field issues.
However, the SuperSport United academy graduate, known for his dribbling ability, has yet to feature this season, with his career once again stagnating.
Papic, though, feels Zongo is way behind other players who have shown more in training, and therefore deserve to play ahead of him.
"At this moment, he is not better than the rest of the players," Papic tells KickOff.com.
"It's not only him, but I tell everybody what they must do and, in this moment, the rest of the players are better than him."
There have been murmurs that Zongo has again gone AWOL, but the Serbian tactician remained noncommittal in his response, and said the winger is expected back at training on Monday.
"At this moment we are waiting for him to come back [to training] on Monday. I don't know [about him going awol]." he added.
"It [his absence] has something to do about private things in Cape Town or something."
Eagles are currently third on the First Division log table, with 18 points after 10 games – six points behind pace-setters Thanda Royal Zulu, and have slowly climbed up after three wins in the last five matches.
The Kwa-Zulu Natala-based outift will visit sixth-placed Mthatha Bucks at Umthatha stadium, after the current internaional break, on November 19.