Luis Figo – Barcelona to Real Madrid – 2000
Moving between Spanish rivals Barcelona and Real Madrid would never have been accepted by the fans – even if Barcelona were to receive a then world-breaking transfer fee of £37m.
On his first return to the Nou Camp a pig’s head was famously thrown in Figo’s direction from the stands – although the Portuguese won’t have minded after going on to win the Ballon d’Or following the move that year.