The fee for the 25-year-old could rise rise to £41.5m and
eclipses the £22m the Hammers
paid Toulouse for France Under-21 defender Issa Diop last
month.
Anderson, West Ham's seventh summer signing, has agreed a four-year deal.
He scored 34 goals in 177 appearances for Lazio and was in Brazil's Olympic gold medal-winning squad in 2016.
Anderson, West Ham's seventh summer signing, has agreed a four-year deal.
He scored 34 goals in 177 appearances for Lazio and was in Brazil's Olympic gold medal-winning squad in 2016.
Hammers
boss Manual Pellegrini, who took charge of the Premier League side in May, has
also signed Paraguay defender Fabian Balbuena, England midfielder Jack Wilshere
and Ukraine winger Andriy Yarmolenko in the past week.
They joined Diop, Poland goalkeeper Lukasz Fabianski and English defender Ryan Fredericks as summer arrivals at London Stadium.
They joined Diop, Poland goalkeeper Lukasz Fabianski and English defender Ryan Fredericks as summer arrivals at London Stadium.
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