Martinez has namechecked Ten Hag when reflecting on the progress he has made in Amsterdam. He won four trophies and earned his Argentina debut under the Dutchman, highlighting how big an impact the United boss has had on his career so far.
"I am so proud of what I have achieved at Ajax and under Ten Hag," said Martinez, who is the subject of bids from United and Arsenal. "I grew as a player and became an Argentinian international thanks to my development at Ajax.
"And I even got to wear the captaincy armband for my country. That was the day my father cried, it was very emotional. My mum cried too, my uncles, aunties, cousins, everyone.
"The World Cup is definitely my goal. We have great players and we must all be ready for it. We won the Copa America together and can do it again."