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Lanzini was influential against the Potters, setting up all three goals to pile the pressure onto Mark Hughes. Mark Noble converted a first-half penalty to give the Hammers the advantage, with Marko Arnautovic and Diafra Sakho scoring late on to put the game to bed.
However, Lanzini was then forced to miss a couple of games through a retrospective ban despite denying he had dived during the game.
Lanzini is one of the most coveted players in the West Hame dressing room - something that has only grown since the departure of Dimitri Payet.
The Argentine international first moved to the club in 2015 from UAE Gulf League side Al-Jazira. After a successful season on loan in the Premier League, Lanzini made the move to London permanent in a deal worth £10.8m.
Having gone on to represent the club on 89 occasions, Lanzini's tally of 16 goals and 14 assists has seen him touted by some of the biggest clubs across Europe.