Thierry Henry claims Manchester United have tried to unsettle Arsenal over suggestions he and Lauren had a fight after Sunday's game at Highbury.
The Frenchman told the Daily Mirror: "They couldn't hurt us on the pitch so they tried to spread rumours about us.
"I don't respect people who spread this kind of rumour. I don't respect them as players and now I don't respect them as men. We can't be affected by this.
"There were no punches in the tunnel. I did not hit him and he did not me."
Henry added: "That would never happen in this Arsenal team. We are too strong and too together for that.
"After we had finished our argument, we shook hands and Lauren wished me all the best for the national team and that was it."
The French striker predicted the incident would make Arsenal even more motivated for next Saturday's semi-final against United at Villa Park.
"It will give us an extra incentive for the match on Saturday. You will see that if you watch me."