Juventus have announced their starting XI for today’s top of the table showdown with Udinese, but the system remains a mystery.
The kick-off is at 17.00 UK time at the Stadio Friuli and the winner will end 2011 as Serie A leaders.
Arturo Vidal and Leonardo Bonucci return from their bans, though Mirko Vucinic is still out injured.
Marcelo Estigarribia starts with Alessandro Matri and former Udinese star Simone Pepe, but it is unclear whether this is a 3-5-2 or a 4-3-3 system.
Meanwhile, Udinese are without the suspended Mehdi Benatia, injured Andrea Coda, Emmanuel Badu and Paulo Vitor Barreto.
Almen Abdi is supporting Antonio Di Natale, while Damiano Ferronetti steps in to the defence.
Udinese: Handanovic; Ferronetti, Danilo, Domizzi; Basta, Isla, Pinzi, Asamoah, Armero; Abdi; Di Natale
Udinese bench: Padelli, Neuton, Doubai, Pereyra, Pasquale, Fabbrini, Floro Flores
Juventus: Buffon; Barzagli, Bonucci, Chiellini; Lichtsteiner, Marchisio, Pirlo, Vidal, Estigarribia; Pepe, Matri
Juventus bench: Storari, De Ceglie, Pazienza, Elia, Giaccherini, Del Piero, Quagliarella