Pies fans would believe that once a Collingwood player leaves their club for another, they all of a sudden become a superstar and wonder why they couldn't play like that at our club.

Personnel changes in coaching staff and the general direction the club wanted to go in, meant that trading of players had to occur to ensure that success was in reach.

A list is compiled to highlight those who, if they stayed in the black & white, could've had an impact to this day or until they retired.

Here are the best 10 players Collingwood have traded or delisted since 2003:

5. Heath Scotland

Scotland played five seasons at the Pies during a golden era which saw Collingwood play back-to-back Grand Finals but lose both of them. He was in and out of the side constantly and his last season in 2003 saw him play 10 games including the Grand Final.

Looking for opportunity, Scotland went to Collingwood's arch nemesis in Carlton where he established quite a career which ended up at the end of 2014.

A lock off the half-back, Scotland was able to use both feet as if they were his preferred and spot players not many people could see on the park. A very consistent player who got to the right spots and knew how to use the ball.

This was only seen when he was in the navy blue as he spent the period of 2004-2014 riding the highs and lows that haunted Carlton.

MELBOURNE, AUSTRALIA - SEPTEMBER 27: Heath Scotland for Collingwood is tackled by Clarke Keating #27 for Brisbane during the AFL Grand Final between the Collingwood Magpies and the Brisbane Lions at the Melbourne Cricket Ground September 27, 2003 in Melbourne, Australia. (Photo by Hamish Blair/Getty Images)