كتب : Ahmad Saied
The 24-year-old goalie grabbed the fan from the back of the neck after he shouted at him: "please, don't make an effort to renew your contract."
Fans have put Kameni under fire after his error during the 1-1 draw against Athletic Bilbao cost his side two precious points.
Espanyol are third from bottom in the Spanish League table on 14 points after 18 games.
Kameni's contract with Espanyol runs out in the end of the season.