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(NRL) Johnathan Thurston - Bulldogs to Cowboys. After being shown the door because of the Dogs' determination to keep Braith Anasta and Brent Sherwin, JT has forged a career that could lead him to achieving immortal status. Four Dally Ms and a key linchpin in the most successful Maroons side ever, surely the Dogs regret letting this superstar go. (Photo by Getty Images)

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(NRL) Jared Waerea-Hargreaves - Sea Eagles to Roosters. One of the most feared men in rugby league was once grinding away on the North Shore. Since leaving for Bondi Beach, JWH won a premiership in 2013 against his former employers. (Photo by Getty Images)

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(NRL) Michael Jennings - Panthers to Roosters. A young Jennings rose to fame through his ability which gave Panthers fans hopes of seeing a repeat of 2003. Those dreams were crushed after the star centre and GM Phil Gould clashed heads. He was shipped out of the club and landed on Bondi Beach. Since then, Jennings won the decider in 2013 and the Panthers fell into obscurity. (Photo by Getty Images)

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(NRL) Jamie Soward - Roosters to Dragons. After Sowie lost the belief of those in the Eastern Suburbs, legendary coach Wayne Bennett believed a young Soward would help steer his Dragons side to the club's first premiership in over 30 years. His belief payed off after Soward pulled the strings in a side that won the 2010 title. (Photo by Getty Images)

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(NRL) Josh Morris - Dragons to Bulldogs. Following in the footsteps of legendary Saints player Steve "Slippery" Morris, Josh was always destined to wear the red and white. After the club decided to let the young star go to arch-rivals, Bulldogs, Josh forged a terrific career in the blue and white. Things got worse for the Saints, as twin brother Brett decided to jump ship in 2014. (Photo by Getty Images)

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(NRL) Luke Patten - Dragons to Bulldogs. The young fullback, who was a key figure in the Saints reaching the '99 decider, was released and allowed to join the Bulldogs. It took a long time for the Dragons to find a fullback capable of matching Patten's abilities, as he went on to win the 2004 premiership. (Photo by Getty Images)

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(NRL) Brent Kite - Dragons to Sea Eagles. Kite became one of the top forwards in rugby league after being released by the Saints for cap reasons. Kite went on to win two premierships with Manly, and enjoyed an impressive representative footy career. (Photo by Getty Images)

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(AFL) Barry Hall - St Kilda to Swans. Hall became a key figure in the St Kilda sides of the late '90s, but was surprisingly shown the door as the Saints opted to focus on the futures of Nick Riewoldt and Justin Koschitzke. Hall helped lead the Swans to the flag in 2005, while the Saints' wait for another premiership has ticked over to 49 years. (Photo by Getty Images)

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(AFL) Josh Kennedy - Hawks to Swans. Being born into a family who bled gold and maroon, Josh's efforts weren't as appreciated as his grandfather John Sr and father John Jr's. After receiving a chance up north, Josh helped lead the Swans to a premiership in 2012, downing his former side in a thriller. (Photo by Getty Images)

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(AFL) Josh Kennedy - Blues to Eagles. A young star in the making was traded to the other side of the country in return for superstar Chris Judd. Since that trade, Carlton's hopes for glory never materialised. With the Blues faltering on a consistent basis, Kennedy has forged himself as one of the premier forwards in the AFL. (Photo by Getty Images)

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(Football) Shinji Ono - Wanderers to Consadole Sapporo. The first-ever legend to don the red and black, the maestro was told that his services weren't needed after two seasons. With the superstar clearly wanting to stay, the Wanderers club faltered without him, playing unattractive football and struggling to break down opposition defences. (Photo by Getty Images)

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(Football) Paul Pogba - Manchester United to Juventus. Football's version of Johnathan Thurston. The young Frenchman has become one of the best midfielders in the world since leaving Manchester for Turin, after not feeling valued enough by the club. (Photo by Getty Images)

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(Football) Gerard Pique - Manchester United to Barcelona. It was difficult for the young Spaniard to break into a team with the best defensive pairing in the world in Nemanja Vidic and Rio Ferdinand, so it wasn't a shock to see him return home. Pique, though, went onto forge a career that would make most jealous, winning every piece of silverware he could attain. He even trumped his former employers in two Champions League finals in 2009 and 2011. (Photo by Getty Images)

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(Basketball) Kobe Bryant - Hornets to Lakers. Drafted by the Charlotte-based side in 1996, the Hornets didn't see much potential in the young guard. Since his trade to the Lakers, Bryant has forged one of the greatest careers in professional sports, leading the Lakers to five championships. (Photo by Getty Images)

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(Basketball) Michael Jordan - Third choice in the 1984 draft! Hailed as the greatest basketballer of all time, and a name that is idolised within the sporting world, it's hard to believe that both Houston Rockets and Indiana Pacers favoured Hakeem Olajuwon and Sam Bowie over a young Jordan. MJ went onto win six championships with the Chicago Bulls. (Photo by Getty Images)