If there is one thing Arsene Wenger likes to do, it is to keep Arsenal fans guessing. As we all were pondering who would fill in for Robin van Persie up front, Wenger has included him in a provisional 19-man-squad for tomorrow night's game. One will be cut from the squad after both van Persie and Fabregas go through one last fitness test.

Definitely out is Alex Song who will be missed in midfield. Expect Denilson to come in, in his place to partner Jack Wilshere who has got over the knock on his ankle.

Wenger has hinted at "minding" the one goal advantage we have coming into this game, but he also knows that we are an attack minded side. It would be unusual for him to change from the 4-3-3 formation he has preferred over the last few seasons, but he may well opt for a more 4-5-1, with one or two players pushing forward to help out the man up front when needs be.

Eitherway, we will find out soon enough as kick-off nears. Speaking of which, check back to Arsenal Comment tomorrow evening as we will be covering the game live via text commentary.

It should be exciting.