The club is monitoring the striker’s progress after he impressed for the under-18 side against Middlesborough at Carrington according to the Manchester Evening News.
Kanu scored twice in United’s 5-1 win and could be set to land a deal at Old Trafford. The 16-year-old can also play in midfield and struck twice in 17 appearances for the Hammers’ Academy last term.
Kanu is the latest youngster to join United’s youth set-up as new academy chief Nicky Butt continues his revamp.