Newcastle United have been stung by this phenomenon in recent years more than most, but when a player is sold, cast off at a whim, there is always a danger that they will return with vengeance in their heart. Prepared to prove their previous employers wrong or willing to silence the inevitable jeers and whistles from the crowd, they bite back with a crucial goal or two. Toon supporters have found themselves stunned into silence due to the sting in the tale served from players from the past, returning to haunt the managers who decided they weren't fit to wear the famous black and white stripes any longer. Whether it was a goal that deprived the club of Champions League football, a last-minute equaliser that contributed to relegation or simply a four-goal blitz, there have been a number of players from the past who have returned with a vengeance, and have had no qualms in letting the world know how delighted they were to have found the back of the net. In some of those cases, their points had certainly been made. Take a look at the ten former Toon players who have returned to bite the Geordies, through some painful goals.