Goal.com are reporting that both Arsene Wenger and Sir Alex Ferguson have an interest in the defender and now Frank de Boer has revealed Ajax would consider selling the Belgium international.
Any switch to Old Trafford or Emirates Stadium would not happen until the summer, as the Dutch side ruled out a transfer during January.
“We know that his contract expires in 2013,” said De Boer in an interview with Eredivisie Live.
“So it's either renew or relocate to a good foreign club, where Ajax would also benefit from a transfer fee.”
The Ajax captain has also suggested he could be leaving the Amsterdam Arena in the summer, though there has been no concrete assertion form either party that this is a definite.
Sky Sports have also claimed Tottenham and Newcastle United had an interest in the centre-half who can also play in midfield.
“There is talk of a contract extension, but not much has been said,” he told AT5.
“Perhaps Ajax will find it to be a good thing when I leave, I don't know. But I think that in the future I could have a very good transfer.”
Although the 24-year-old claimed a new deal had not been talked about, his manager seemed quite sure that the topic had been raised and that the club had made it clear they were intending to open talks.
“We already told Jan last year in Turkey that we are keen to hold on to him. We will open talks early in March to discuss a new deal,” added De Boer.
Should Vertonghen choose to join the Gunners, he would line up next to former Ajax and current international team-mate Thomas Vermaelen.