The two Premier League sides are set to agree on a £42.5million fee for the the defender followed by add-ons.
Wan-Bissaka, 21, has three years left on his current deal at Palace and after a standout couple of seasons in the first-team, is rated at around £60m by his club and Ole Gunnar Solskjaer is keen to add the the player to his squad.
With Antonio Valencia leaving Old Trafford on a free and Ashley Young the only recognised senior full-back, Solskjaer was keen to reinforce the full-back position.
Ray Parlour talks about Paul Pogba and dealing with transfer rumours
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