Dja Djedje joined Lens on-loan in January to the end of the season.
In their fixture against Bourg-en-Bresse in Ligue 2, Lens fans displayed a banner that said: "Beat your opponents, not your wife". It is believed to target Djédjé and Nicolas Douchez who have had allegations of domestic abuse made against them.
Speaking to But! Football Club, Djédjé said: "I saw it in the first period. It's true that it hurts, especially since there was my family in the stands. Supporters have also released really nasty insults on my family This is especially what touched me."
He went on to defend himself: "I don't beat my wife. We had an argument in the street, and a few passers by called the police to make things worse. That doesn't mean I beat her. It's because I'm a professional footballer that it escalated.
"I have been with my wife for years and she is still in the stands. That's why I do not dwell on it. Only my family knows. The problem is that my wife never wanted to make a complaint.
"These things make you think. I always wanted to come back here despite having two years left on my Watford contract. Today I'm thinking about what was said Monday about my family.
"I find that quite nasty. After, as players, we're just here for a bit. They'll always be there and will be behind the team. What's important is to support the players regardless of the club's situation."