The youngster is one of the hottest properties in Europe after an impressive season.
Geertruida was spotted in the stadium during Liverpool's draw with West Ham on Saturday in London.
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Feyenoord boss Arne Slot is the favorite to become the next Liverpool manager.
Geertruida, who is only 23, can play at centre-back, full-back or at the base of midfield.
He did not appear to have an issue hiding his travels, posting his attendance on Snapchat.