Arson, riots, and a severed pig's head: These 20 players dared to cross the divide and play for both clubs in some of soccer's biggest rivalries

Gonzalo Higuain and Mario Gotze are amongst those to make the switch to a rival club.Getty/Valerio Pennicino/Friedemann Vogel/Alexander Hassenstein

• In the world of soccer, transferring to a rival club is seen as the equivalent of high treason
• That didn't bother the following 20 stars however, all of whom turned their back on their clubs to sign for the enemy.
• Read below to find out about soccer's biggest traitors and how their betrayals were received.

In the world of soccer, transferring to a rival club is seen as treason.

That doesn't mean there aren't plenty of players who do it however, whether it be for money, for titles, or, in some cases, simply to spite their former club.

Here are 20 of the most treacherous examples of players turning their back on their clubs to sign for a rival, as well as how their betrayals were received. Believe us when we say: "not well."