Zaha tweeted he is on his way to the Premier League leaders, reports The Sun.
He wrote â€śLooks like iâ€™m on my way to the top of the premier leagueâ€ť on his account on Saturday night.
Yet the message quickly disappeared and Zaha, 20, then backtracked yesterday.
He posted: â€śI donâ€™t know remember tweeting no such thing so I donâ€™t know where the tweet came from #confused.â€ť
The message will be an embarrassment to Zaha and United boss Alex Ferguson â€” and will frustrate Palace fans.
But United now look to have beaten Arsenal and Spurs in the race to sign him.