Martin Ferguson, Manchester United scout and brother of Sir Alex Ferguson, has watched the player in action several times this season.
His glowing reports on the Kenyan have persuaded Fergie that the player has what it takes to succeed at Old Trafford and an official bid looks on the cards.
The 21-year-old, who can also play at the heart of defence, is widely regarded as one of the most talented holding midfielders in the United Kingdom and is tipped to make a switch to English Premier League in the near future.
Celtic are likely to earn a substantial profit on the talented midfielder, having paid Germinal Berchot mere £900,000 in the summer of 2011.
Since making the move to Parkhead, Wanyama has scored 6 goals in 36 Scottish Premier League games for the Bhoys.