The 25-year-old has impressed for the Portuguese giants this season, contributing 16 goals and four assists from 29 appearances in all competitions.
Speaking to BTV, Vieira said: "I received an offer of €60m (£53.5m) for Vinícius and did not sell. He is priced at €100m.
"If it weren't for the pandemic, Benfica would have had two players sold for €100m each."
Vinicius still has over four years remaining on his contract at Estadio da Luz.