Arsenal fans, remain calm.
The Frenchman, who joined the Championship strugglers on deadline day, struck an early equaliser, before leading Charlton's fightback from 3-1 down to level the scores in the 84th minute.
His hard work was undone by Deniss Rakels' dramatic, last-minute winner, but that didn't stop Gunners fans going positively crazy as news filtered through of their latest hero's exploits.
Some suggested a dramatic response from Arsene Wenger:
And it was particularly bad news for one superfan:
Mixed feelings, then, for the Arsenal faithful.