Mexico international Ochoa, a nominee for this year's Ballon d'Or, has confirmed his agent is in negotiations with United over a three-year contract.
Excelsior says Club America are seeking £7 million for Ochoa.
"It's a great league (England), without doubt one of the best, it would be very competitive and very exciting," said the goalkeeper.
"My departure would depend on conditions that are favorable to the club and obviously for me.
"I see it being very close, either happening in December or July."