Juventus boss Maurizio Sarri hit out at his players after they were beaten by Lyon in the first leg of their Champions League last-16 clash.

Lucas Tousart stunned Juve when he turned home Houssem Aouar's cross to give Lyon the advantage heading into the return leg in Italy next month.

And Sarri blasted his players afterwards, accusing them of failing to respond to his demands for them to play the ball quickly.

"I don’t know why, I can't get the players to understand the importance of moving the ball quickly," said former Chelsea manager Sarri following Juve's 1-0 defeat on Wednesday.

"This is fundamental - we’ll keep working on it and sooner or later this concept will get into their heads."

Maurizio Sarri said his players were not grasping the fundamentals of moving the ball quickly

Tousart's first-half goal ensured a deserved win for Lyon, who are bidding to reach the quarter-finals for the first time since 2010.

It was the French side's first victory over Juventus , who suffered their first defeat in the competition this season.

The Serie A leaders lacked quality, with Cristiano Ronaldo rarely getting into scoring positions, and they will need to improve in the return leg on March 17 if they are to progress.

About 2,700 Juventus fans travelled from Piedmont, a region neighbouring the coronavirus-hit Lombardy, as the game went ahead as planned despite concern over the virus.

Lucas Tousart netted the winner on the night to give Lyon the advantage heading into next month's second leg

On the pitch, Lyon were at their best, with Aouar and new signing Bruno Guimaraes inspiring their team.

"We were not the favourites and rightfully so, but we believed that we could unsettle Juventus," said midfielder Aouar.

"But let's not get carried away, there's one full game left."

Juventus have only won four of their last eight competitive matches, but captain Leonardo Bonucci pointed out that the team had improved.

Juve's Matthijs de Ligt was receiving treatment for a head injury when Lyon scored

"We messed up our first half, sometimes it happens," he said. "We gifted one half and they scored at a moment when they were good at hurting us."

After a cagey start, Lyon made a clear chance when Karl Toko-Ekambi's header at the near post from Houssem Aouar's corner hit the crossbar.

Aouar then burst into the area and delivered a cutback that Tousart placed into the top corner from close range to put the French side ahead after 31 minutes.

Juve were at the time down to 10 men as Matthijs De Ligt was receiving treatment for blood on his head after being accidentally stamped on by team mate Alex Sandro.

Cristiano Ronaldo fired one effort wide but rarely got into scoring positions

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The visitors threatened through Ronaldo but the Portuguese shot just wide at the end of a counter-attack as Juve looked short on confidence.

The Italian side increased the pressure after the interval as Lyon tried to sit back, hoping to hurt Sarri's team on the break.

Paulo Dybala went close for Juve with a volley, while substitute Gonzalo Higuain wasted a couple of chances and Dybala had a goal ruled out for offside as Lyon held firm.