The 26-year-old has been a major hit in the North-East since securing a switch from Ligue 1 outfit Lyon in January 2022, when the Magpies were embroiled in a relegation battle in the Premier League.
Fast-forward two years and Eddie Howe's men have battled with the likes of PSG and Borussia Dortmund in the Champions League, finishing fourth in the top flight last term.
With Sandro Tonali banned due to him breaching betting rules, the Brazilian has been a key man in the engine room for Newcastle this campaign, missing just one Premier League match.
According to The Mirror, perennial Ligue 1 winners PSG are lining up a £99m bid for Guimaraes this month, as the French giants look to test the Magpies' resolve.
The midfielder recently signed a new contract at St James' Park which contains a £100m release clause, and head coach Howe is keen to keep hold of the player.
However, after spending around £375m on signings since their Saudi takeover, Newcastle are walking a fine line financially and must prevent breaking profit and substantially rules.
Guimaraes is understood to be happy in the North-East but a move to the French capital would almost guarantee Champions League football every season.
Elsewhere in the Premier League, West Ham United defender Nayef Aguerd is allegedly wanted by Serie A duo AC Milan and Roma in the current window.
The Morocco international signed for David Moyes's Hammers in the summer of 2022 from Rennes for around £27m, helping the club to Europa Conference League glory during his first season in England.
Aguerd has been a regular figure in the West Ham backline
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