The Reds required three points to guarantee clinching the Premier Academy League Group C title, but were held to a 1-1 draw by a stubborn and physical Bolton Wanderers side.
Everton's 2-1 win over Crewe Alexandra means the title will be decided in United's favour on Tuesday with a win or a draw against the Toffees in the Reds' last game of the season. If Everton win that game and their other game in-hand then they will take the title.
It was a scrappy start to the game at Bolton, with Bolton's feisty opening 10 minutes not allowing United to settle. The knowledge that the title was on the line perhaps led to a nervy start from the Reds, but Bolton's tenacity and physical approach is always likely to be a jolt to the system at 11 o'clock on a Saturday morning.
The home side's tenacity was rewarded in the 11th minute when Michael O'Halloran volleyed in at the far post to put the home side in front. United needed to match Bolton's agression, and the Reds slowly began to do that, combining steel with style.
The breakthrough arrived on 19 minutes when King cut the ball back and Keane blocked an attempted clearance inside the six-yard box, thankfully seeing the ball