Newcastle United have stepped up their interest in Kilmarnock youngster Charlie McArthur but face competition from English Premier League rivals.
It is understood the Magpies have opened discussions with the Rugby Park side for the 17-year-old in the hope they can strike a deal to bring the defender to St James' Park.
However, other unnamed clubs have also made their interest in the Scotland Under-17 international known to Derek McInnes' side.
Manchester City, Liverpool, West Ham, Wolves and Brighton are among those to have been linked with McArthur previously.