The Argentine was returning from international duty when the accident occurred. A spokesperson has since confirmed to Express Sport that Lanzini is unhurt and has undergone medical checks at the club.
The Sun claimed motorists watched on in horror as the vehicle carrying the 29-year-old flipped on its side. Firefighters are said to have raced to the scene but Lanzini walked away without injuries.
The crash took place at around 2:30PM on Thursday afternoon. Lanzini was on his way to the club’s training complex in East London after returning from international duty.
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The former Al-Jazira man has played in seven of the club’s Europa League matches and will likely be involved in their Europa League quarter-final clash with Lyon next Thursday. The East Londoners host the French side in the first leg.

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Moyes’ side beat Sevilla in a thrilling last-16 tie. Ukrainian forward Andriy Yarmolenko struck an emotional winning goal at the London Stadium.
It is not yet clear whether Lanzini will be fit to face Everton on Sunday. He was an unused substitute in both of Argentina’s fixtures this week – a 3-0 victory over Venezuela and a 1-1 draw with Ecuador.