The former Newcastle man took advantage of Alexander Walke's ill-judged decision to come off his line as Dimitri Payet whipped in a free-kick form the right to head into the unguarded net, or so it seemed.
On closer inspection it appeared that the France international headed the ball against his arm, but neither the referee or linesman witnessed it.
The goal was the first Marseille have scored against Salzburg in three meetings between the two sides this season.
Check out the goal for yourself below:
April 26, 2018