As for the player himself - he has played down rumours linking him with a move to St James' Park.
Following the sale of left-back Jose Enrique to Liverpool on Friday, Magpies boss is Alan Pardew is openly in the market for a replacement.
Pieters has replaced Giovanni van Bronckhorst as first-choice left-back for the Dutch national team.
However, the 23-year-old has distanced himself from the rumours, insisting that his club may not want to sell and that following the death of his grandmother his mind is currently not on football matters.
Erik Pieters: "I am not focused on football right now, only my family counts.
"Moreover, there must first be serious discussions with Newcastle and PSV must be willing to let me go."