As Manchester United prepare to take on Arsenal this weekend, much of the focus will be on the north London's side fine start to the season.
However, the other focus will be on former Gunners star Robin van Persie as he prepares to face his old team once again.
So, with Arsenal sitting pretty at the top of the league, wouldn't it just be like football for the Dutchman to derail his former side's title charge.
And, throughout the years, many stars have returned to haunt their former clubs.
Let's take a look at five of the best returns.
Have your say in the comments section. Which other stars deserve a place on this list?