Maurizio Sarri stormed away from Chelsea’s training session at the Olympic Stadium on the eve of the Europa League final against Arsenal within an hour of admitting for the first time he is considering his future.

Sarri twice flung his baseball cap to the ground in frustration, kicking it across the technical area, before departing down the tunnel while the session was still winding up. The tantrum occurred moments after Gonzalo Higuaín and David Luiz had been involved in an altercation during a practice match, though the club were quick to deny the incidents were connected.

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Sarri is understood to have been unhappy that the team’s final training session was open to observers, as per Uefa’s stipulation. A Chelsea spokesman said: “Maurizio’s frustration displayed at the end of training was not related to any of his players, but was due to not being able to practise set-plays in the final 15 minutes of the hour-long training session as it remained open to media.”

There was presumably exasperation, too, that N’Golo Kanté had been limited to around half an hour of gentle running with a physio. The knee injury picked up at Cobham on Saturday is likely to see him start the final on the bench at best. The midfielder spoke at length with the medical director, Paco Biosca, on the pitch before going inside for further treatment. Sarri had earlier rated his involvement as “50-50”.

The fraught nature of the session rather clouded the manager’s preparations as he seeks to secure the first silverware of his career in Baku in a game Chelsea’s opponents must win to secure Champions League football. Yet, despite a third-place finish in his first campaign in charge, Sarri’s future at Stamford Bridge remains very much in doubt. Juventus have been credited with an interest in luring him to Turin as a replacement for Massimiliano Allegri and, given the fractured nature of his relationship with a section of the club’s support, Chelsea are unlikely to stand in his way if his contract is bought out.

Facebook Twitter Pinterest Gonzalo Higuaín and David Luiz during training. Photograph: Bradley Collyer/PA

Sarri has suggested he will hold talks with the director, Marina Granovskaia, in London following the Europa League final but admitted there are questions to be answered over his future.

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“I want to think only about the final,” he said. “Then I have a contract with Chelsea for two years [there is an option for a further year beyond 2020]. So, first of all, I will speak with Chelsea. But this is not the moment to discuss this. Now we have to think only about the final because our feeling is that we deserve to win.

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“For me, at the beginning of the season, it was really very difficult to understand my players, to understand the mentality. But, after a very difficult month in January, in February they started to change. Or probably I changed, I don’t know. In this moment I love them because I have 20-22 wonderful men and wonderful players. So now I’m really very happy with them. I have to consider the future. And I have to consider that I love English football, I love the Premier League.”

César Azpilicueta suggested the priority will be to “ruin” the victory parade already planned by Arsenal – such events have to be cleared in advance – for Thursday in Islington should they prevail in Azerbaijan. Petr Cech is set to feature against his former club in what will be his final game as a player, with the Arsenal goalkeeper expected then to rejoin Chelsea in an administrative capacity.

That had prompted concern in some quarters over a possible conflict of interest. “How can we not believe in him?” asked Unai Emery of the 37-year-old. “I respect him a lot. His career has been amazing, first as a person, second as a professional goalkeeper. He deserves trust in him because his career says to us he is a gentleman. He is a great man and a professional. It will be his last match, and I want to do something important with him in the last moment of his career.”