Watch Panathinaikos vs Roma Live Streaming
Watch Panathinaikos vs Roma Live StreamingThe young Pole, out earlier in the season after knee surgery, has seen Italian Vito Mannone emerge as a genuine challenger for the long-term goalkeeper's jersey at the Emirates Stadium.
Fabianski may have been somewhat exposed on his last outing during the FA Cup defeat at Stoke but Wenger has complete faith in his stopper.
"I believe that Fabianski is top, top level and has massive potential," said the Arsenal boss.
"It is not easy for a keeper to come in and out.
"What he misses at the moment is the number of games but I have no doubt about his potential."
Despite heading to Portugal with some five first-team regulars missing, Wenger maintains there can be no excuses should Arsenal fail to deliver the result needed at Estadio do Dragao.
Russian playmaker Andrey Arshavin, centre-half William Gallas, defensive midfielder Alex Song and Croatia striker Eduardo were also not among the 18-man travelling party, leaving the Gunners somewhat light as they prepare for the first leg of their last-16 clash.
