Reports have suggested that the 17-year old will sign a four-year deal with the Magpies, becoming the 11th Frenchman in Alan Pardew's squad.
Kemen is capped by France at Under-19s level and he says he will make the move to St James' Park providing talks between the two clubs run smoothly.
"Newcastle is a big team and they look after young players. If they agree everything with Metz, I will join them," he told Sky Sports.
"There are some good French speaking people there so I can settle there fine on the guidance of everyone there."