Knox spent time on trial at Sunderland, as well as Liverpool, Manchester United and Graeme Murty's Rangers.
Rangers and Celtic should be disappointed to have missed out on imminent Sunderland signing.
Sunderland are set to sign Scottish youngster Matthew Knox, who has been linked with Manchester United, Liverpool and Rangers among others.
Livingston striker Matthew Knox is reportedly wanted by Leeds United in the summer transfer window.
Leeds United and Crystal Palace are two of the sides who are interested in Livingston starlet Matthew Knox.
Crystal Palace and Leeds United are reportedly in the race to sign Matthew Knox.
Mark Warburton sang Matthew Knox's praises during a short spell training with Rangers and he could finally sign him at Nottingham Forest.
Nottingham Forest are reportedly keen on signing the 17-year-old.
Glasgow Rangers youngster Billy Gilmour has agreed to leave Ibrox to join Chelsea this summer.
Teen sensation Matthew Knox is a star at Livingston - but joining Rangers does not mean opportunities would dry up.