Arsene Wenger said he is optimistc that Ljungberg, who missed training on Monday, and Djourou will both be available. Captain Thierry Henry is expected to start after playing on Saturday.
But Philippe Senderos (shoulder), Gael Clichy (foot), Lauren (knee) and Abou Diaby (ankle) are all still a few weeks away from a return.
Arsenal and FC Porto have never met before. Arsenal have hosted Portuguese opposition twice, winning once and losing once. Most recently they lost 4-2 on aggregate to Benfica in the 1991-92 Champions Cup.
Arsenal have home ground advantage and currently on form... so possible 1 or 2 goals win.
Arsenal's resurgence continued as they dispatched Porto 2-0 at the Emirates Stadium to take a significant step towards reaching the knockout stages of the Champions League.
Arsene Wenger celebrates 10 seasons at the north London club on Thursday - and the Gunners boss firmly believes he has never had more potential within his squad, despite what had been a sluggish start to the new campaign.
First goal 37min
Emmanuel Eboue made ground down the right, and whipped in a teasing centre. The ball flew just over Pepe towards the far post - where the Arsenal captain was waiting to expertly head back across the keeper and into the far corner.
Second goal 48min
William Gallas charged forwards and fed over possession to Henry at the edge of the Porto area. The Gunners skipper moved the ball across before slipping in Hleb on the overlap down the right. The Belarus midfielder needed no second invitation and dispatched a low, angled drive into the far corner.
Arsenal were now in cruise control.
Henry made plenty more of his trademark runs to the by-line, with Fabregas' snap-shot from one such cutback across goal forcing a good reaction save by Porto keeper Helton.
Lehmann needed two attempts to gather a low, angled drive from Ricardo Quaresma at his right-hand post with 10 minutes to go before Arsenal closed out a comfortable victory.
ARSENAL now have their house well and truly in order.
The Gunners struggled at the start of the season to adapt to their new Emirates home.
All the trappings were installed and there was so much more room — but it just did not feel like the old place.
Even manager Arsene Wenger admitted on the eve of this clash: “Your stadium is like your house. You only feel at home once you know where everything is.”
Well, they have certainly discovered where the goalposts are now.
One man who had been enjoying the new surroundings, until he was injured at the end last night, was defender William Gallas.
Gunners keeper Jens Lehmann was rarely troubled — although he did survive an early scare when Anderson’s corner was turned towards goal by Bruno Alves and the big German saved with his foot.
Arsenal captain Thierry Henry feels close to recapturing full match sharpness following his recent injury lay-off.
The French striker was on target on Tuesday night in the 2-0 Champions League win over Porto at the Emirates Stadium, which saw him chalk up 50 goals in European competition.
The 29-year-old was given extra time off following his World Cup exploits with France during the summer.
"When you stop for a week during the season, it does not matter because you have a lot of games under your belt, but when you stop for a week at the beginning, it is not what you want to do.