The countdown to the play-off finals has begun this week and there are some very exciting games set to take place in the coming days at Wembley.

In Sky Bet League One, two former Premier League sides meet as Charlton take on Sunderland in a repeat of a very famous play-off game.

Both sides are looking to get back into the Championship in this one, though, and both will feel they can with the Addicks in good form and Sunderland possessing big game players.

It should be a cracker, then, and the atmosphere is set to be brilliant with Charlton selling over 30,000 tickets already for the game.

It's an impressive feat for the Addicks, and fans on Twitter have been quick to express their delight at the number.

Let's take a look at some of what has been said:

A great effort, and that number is only set to increase as the days wear on this week.