The Brazilian's agent Alexis Malavolta was seen in France this week and that has led to transfer speculation.
Guimaraes has been linked to Paris Saint-Germain in recent months by the French press.
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Taking to X, formerly Twitter, Malavolta wrote: "Good morning. I would like to point out that I am in Paris for private and family reasons and not for work.
Please respect and don't make up stories. Bruno is very happy in Newcastle. THANKS!"
On his future, Guimaraes said recently: "I hope to stay much longer. I don't know what the future brings let's see, but I hope to play much more for Newcastle United."