The Gunners captain sat out Saturday's horror defeat by West Brom at the Emirates having limped off in the first half of last weekend's draw at Sunderland with a hamstring injury.
Fabregas' leadership, guile and composure on the ball was sorely missed as Arsenal let five points slip in the pursuit of a first Barclays Premier League title since 2004.
Captain fantastic: Cesc Fabregas scored three goals in two games before injury struck
Sidelined: Fabregas suffered a hamstring injury against Sunderland 10 days ago
His manager has completely ruled the Spaniard out of Tuesday's Champions League trip to Belgrade, asking him instead to stay behind in London and step up his rehabilitation.
'Cesc for Partizan is impossible,' Wenger said. 'But he has started to run so we have to monitor his progress in the week and there is a little hope there he will be available [for Sunday].'
Fabregas was left out of Arsenal's opening day draw with Liverpool due to his World Cup exploits but played a pivotal role in victories over Bolton and Braga, before grabbing the goal in the game against Sunderland.
The Gunners have also travelled to Serbia without goalkeeper Manuel Almunia and defender Thomas Vermaelen, but Kieran Gibbs has joined up with squad.
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