Juventus players during a training session on

Juventus coach Massimiliano Allegri stuck with the tried and tested when he opted for a four-man defence for Wednesday's Champions League last 16, second leg at Borussia Dortmund.
The 47-year-old had been considering playing a back three and packing his midfield, but he stuck to the same formation which secured a 2-1 win in the first leg in Turin, with goalscorers Carlos Tevez and Alvaro Morata comprising the front two.
With playmaker Andrea Pirlo ruled out with a calf strain from the first leg, Argentina's Roberto Pereyra comes into the midfield with Chile's Arturo Vidal charged with shielding the defence.
For Dortmund, defensive midfielder Nuri Şahin remains unavailable so Germany pair Ilkay Gundogan and Sven Bender pair up in front of the back four.
Kevin Kampl missed the first leg with illness but returns to the attacking midfield alongside Germany winger Marco Reus and Armenia's Henrikh Mkhitaryan, with the fleet-footed Pierre-Emerick Aubameyang up front as the lone striker.
Starting line-ups:
Borussia Dortmund (GER) (4-2-3-1)
Roman Weidenfeller; Neven Subotic, Sokratis Papastathopoulos, Mats Hummels (capt), Marcel Schmelzer; Sven Bender, Ilkay Gundogan; Henrikh Mkhitaryan, Marco Reus, Kevin Kampl; Pierre-Emerick Aubameyang
Coach: Jurgen Klopp (GER)
Juventus (ITA) (4-3-1-2)
Gianluigi Buffon; Stephan Lichtsteiner, Leonardo Bonucci, Giorgio Chiellini, Patrice Evra; Claudio Marchisio, Paul Pogba, Arturo Vidal; Roberto Pereyra; Carlos Tevez, Alvaro Morata.
Coach: Massimiliano Allegri (ITA)
Referee: Milorad Mazic (SRB)
Source: AFP