Cristiano Ronaldo trains as Juventus prepare for Ferencvaros - in pictures

Portuguese marked his return to action after testing positive for Covid-19 with two goals in Juve's 4-1 Serie A victory against promoted Spezia

Juventus' Portuguese forward Cristiano Ronaldo controls a ball as he takes part in a training session at the Juventus Training Centre in Turin. AFP

Juventus' Cristiano Ronaldo, Sami Khedira, Dejan Kulusevski, Aaron Ramsey and Matthijs de Ligt during training. Reuters

Juventus' Cristiano Ronaldo during training. Reuters

Juventus' Portuguese forward Cristiano Ronaldo stretches as he takes part in a training session. AFP

Juventus' Portuguese forward Cristiano Ronaldo runs. AFP

Cristiano Ronaldo is watched by Juventus' Italian coach Andrea Pirlo. AFP

Juventus' Italian coach Andrea Pirlo. AFP

Juventus' Italian coach Andrea Pirlo watches his players during a training session. AFP

Juventus' Cristiano Ronaldo during training. Reuters

Cristiano Ronaldo runs with teammates. AFP

Juventus defender Giorgio Chiellini , midfielders Arthur and Rodrigo Bentancur. AFP

Juventus' Cristiano Ronaldo during training. Reuters

Juventus coach Andrea Pirlo during training. Reuters

Juventus' Cristiano Ronaldo during training. Reuters

Cristiano Ronaldo during training. Reuters

Juventus' Leonardo Bonucci, Paulo Dybala and Rodrigo Bentancur during training. Reuters

Juventus' Cristiano Ronaldo and teammates. Reuters

Juventus' Cristiano Ronaldo, Dejan Kulusevski and Sami Khedira. Reuters

Juventus' Alvaro Morata. Reuters

Juventus coach Andrea Pirlo during training. Reuters

Juventus coach Andrea Pirlo during training. Reuters

Juventus' Paulo Dybala. Reuters

Juventus' Cristiano Ronaldo. Reuters

Juventus' Cristiano Ronaldo during training. Reuters

Juventus' head coach Andrea Pirlo. EPA

Juventus players during a training session. EPA

Juventus players during a training session on the eve of the UEFA Champions League group stage match against Ferencvaros. EPA

Cristiano Ronaldo and Dejan Kulusevski. EPA

Juventus' head coach Andrea Pirlo. EPA

Cristiano Ronaldo. EPA

Juventus' Giorgio Chiellini. EPA

Cristiano Ronaldo joined the rest of the Juventus squad as they were put through their paces in preparation for Wednesday's Champions League clash at Ferencvaros.

The Portuguese striker marked his return to action after testing positive for Covid-19 with two goals in Juve's 4-1 Serie A victory against promoted Spezia on Sunday.

Ronaldo missed four games for Juventus, including last week's 2-0 Champions League defeat against Barcelona, in Turin.

Andrea Pirlo's side travel to Hungary second in Group G on three points after beating Dynamo Kiev in their opening match.

Ferencvaros are bottom on one point.

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