The 5ft 7in Scotland international has been one of the team's star performers this season and the Latics boss knows his showings will have alerted bigger clubs.
"Shaun Maloney is a player who could have been born in any other country in terms of the technical ability and the quality he has," said Martinez.
"When he first joined us he took a little bit of a time to get used to the pace of the league but he's been magnificent and very consistent since he started playing regularly.
"I feel Shaun is a player who can play in any team, he has the quality of any other top player in that position.
"He is someone who can find space - he finds it so natural to turn - and players who can drive into space is a real strength to break things down.
"I would never be surprised if a club with more tradition and bigger power looks at him but that's a compliment to us.
"I don't want to see Shaun leaving because he's so instrumental to what we do.
"But it wouldn't surprise me because he is a top player and has been consistent for 18 months now."