Probable starting eleven:

Fulham:
Stockdale, Kelly, Hangeland, Senderos, Riise, Murphy, Etuhu, Dempsey, Ruiz, Dembele, Orlando Sa

Arsenal:
Szczesny, Djourou, Mertesacker, Koscielny, Vermaelen, Ramsey, Song, Arteta, Walcott, Van Persie, Gervinho

Arsenal started the season very bad, but they are better and better as the time goes. At the moment Arsenal is in excellent series of seven victories in the last ten games. They suffered only one defeat, from Manchester City. It seems Arsen Wenger compose good team and we must count on Arsenal, even they are 9 points behind two Manchester teams at the moment.

I think Arsenal is able to win here. They have an impressive score on the last 5 away matches, winning 4 of them:

21.12. Aston Villa - Arsenal 1:2
18.12. Manchester City - Arsenal 1:0
03.12. Wigan - Arsenal 0:4
19.11. Norwich - Arsenal 1:2
29.10. Chelsea - Arsenal 3:5

Fulham on other side is not a bad team, but they suffered a heavy defeat on the last home match. Fulham lost 0:5 from Manchester United on 21.12. For this match Martin Jol will be missing Bobby Zamora due to a calf injury.

I think Arsenal will win at Craven Cottage. The quality is on their side, plus Wenger has much longer bench. It is important in Christmas and New Year period, when the schedule is very busy. Robin Van Persie is in great form, the return of former striker Thierry Henry is a big morale boost, so I think Arsenal is able to win this derby.