Still just 16-years-old, Knox has already made his debut for Livingston, and he is regarded as an exciting talent.
The youngster caught the eye in pre-season when impressing during some friendlies, and immediately had Premier League scouts sent out in force, according to the Mail.
Everton invited him to look around their training ground, whilst Spurs had him turning out for their youth sides and getting involved in first-team training. Liverpool also got in on the act, and he managed to score for the Reds whilst on trial.
However, Forest are the first-team to make a formal approach for Knox, which was quickly rebuffed by Livingston.
It is stated that the Scottish club have no plans on selling Knox, although they expect more bids to be made for his services.
He is still extremely young, and the club want him to grow and develop whilst helping Livingston on the pitch.
It is not known whether Forest are ready to raise their bid and make a second approach for Knox as of yet.