The Nigerian has been in dazzling form this season.
"You cannot stop players going to the next moment in their career and the potential of Victor is incredible," Martinez said.
"As long as the club gets the right price and the player gives everything they have got for Wigan, then our chairman Dave Whelan will never stop them from moving upwards.
"It happened last year with Charles N'Zogbia and it would be unrealistic of us to think we will never lose players.
"Victor has the quality to go as high as he wants to. We sometime forget he is only 21 and we don't want anyone to feel stale here.
"He is enjoying his football and if he attracts admirers from outside the club, that's because he is doing well and Wigan are doing well."