The Edmonton Oilers joined the NHL in 1979, 46 years ago! Over this time, the club has seen many players come and go, some even staying for short stints. This can be with prospects the team gave up on too quickly, deadline acquisitions that did not re-sign, or players who ended their long career as an Oiler, and more.
It is bound to happen and in doing some research for this, I was blown away at the number of players that I recognized who found themselves in Oil country without me remembering they ever even put on the jersey.