When Arsenal signed William Gallas in 2006, he was already a hugely controversial figure, being publicly accused by his former club Chelsea of threatening to score own goals if the club didn't let him leave.

True or not, the end result was Gallas' transfer to Arsenal, where he remained for four seasons, during which he often found ways to cause a stir whenever he could.

On one such occasion, Gallas had to be restrained as he appeared to confront the away crowd in anger following a penalty decision that didn't exactly sit well with him. But his hot-headed nature was always forgivable given his defensive skills on the pitch, which earned him the honors of regularly captaining Arsenal's first team while he was there and being named to the PFA Team of the Year in 2006.

What wasn't so forgivable in the eyes of Arsenal's outspoken fanbase was his decision to leave the club after demanding ludicrous amounts of money that the club insisted they just couldn't justify paying.

So Gallas moved on. To Tottenham. Another controversial move seemingly made only to rattle some nerves.

Gallas remains with Tottenham to this day, though injuries have kept him out of the lineup throughout most of EPL's newest campaign. He has faced off against his former side in the North London Derby twice already (he appeared six times in the derby with Arsenal), with more appearances surely to come.

Also notable: William Gallas is the only player to have ever appeared for Chelsea, Arsenal and Tottenham.