William Gallas has taken aim at former Arsenal teammate Samir Nasri.

Manchester City midfielder Nasri, currently on-loan at Sevilla, raised this week a previous nasty row with Gallas.

Gallas told SFR Sport: "Personally, I do not want to dwell on what happened.

"He never knew what he was able to do. Maybe that's why he did not have the career he should have had, because he had great footballing qualities.

"It is not surprising to see that some coaches may say that his career is a mess."