The pair had to be separated by manager Mikel Arteta after a challenge by Ceballos in a practice match during the latest international break sparked a scrap which left the midfielder with a scratch on his nose.
Ceballos told The Sun: "I'm not going to say that there wasn't a clash or a scuffle.
"It was not exemplary behaviour but it is good to see Arsenal is alive - that the team has character.
"We are two footballers with very similar leadership qualities and these things can happen.
"We didn't let a single day go by. We spoke that same afternoon after training.
"Now we have to learn so it does not happen again."
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