In-form Arsenal will be without the England starlet for their clash with the Rafa Benitez's unbeaten Partenopei, though Tomas Rosicky returns to the starting XI in his absence
As exclusively revealed by Goal, an ankle problem has limited the England international to a place on the substitutes bench, though it allows Tomas Rosicky a starting berth after returning from injury.
|8/1||Juan Mata is 8/1 with Paddy Power to open the scoring against Steaua
Elsewhere, Spain international Mata has been rewarded for excellent displays against Swindon and Tottenham with a return to the Chelsea starting XI, having been asked to adapt to the side's new style by manager Jose Mourinho.
The 25-year-old is joined by compatriot Fernando Torres, who today escaped a ban for scratching Spurs defender Jan Vertonghen, while David Luiz, also briefly out of favour under the Portuguese boss, starts in central defence once again.
Arsenal: Szczesny, Sagna, Mertesacker, Koscielny, Gibbs; Arteta, Flamini; Rosicky, Ozil, Ramsey; Giroud. SUBS: Fabianski, Vermaelen, Monreal, Jenkinson, Wilshere, Bendtner, Gnabry.
Napoli: Reina; Mesto, Albiol, Britos, Zuniga; Inler, Behrami; Callejon, Hamsik, Insigne; Pandev. SUBS: Cabral, Fernandez, Armero, Cannavaro, Dzemaili, Mertens, Zapata.
Steaua Bucharest: Tatarusanu, Szukala, Gardos, Filip, Latovlevici, Georgievski, Tanase, Stanciu, Bourceanu, Popa, Piovaccari. SUBS: Nita, Varela, Prepelita, Cristea, Neagu, Leandro Tatu, Kapetanos
Chelsea: Cech; Ivanovic, D Luiz, Terry, Cole; Ramires, Lampard; Mata, Oscar, Schurrle; Torres. SUBS: Schwarzer, Azpilicueta, Cahill, Mikel, Willian, Ba, Eto’o.