Having previously been linked with the likes of Chelsea, Tottenham and Napoli, the Colombia international reveals that he is keen to join a bigger club while he is in his prime
The Colombia international scored 26 times in 30 Primeira Liga matches last season and has seven goals to his name from nine top-flight fixtures this campaign.
Martinez, who joined Porto from Mexican side Chiapas in 2012, has revealed that he would welcome a move if the conditions were right, with the likes of Napoli, Chelsea and Tottenham having previously been linked.
"The years are passing and one day I hope to make a good transfer," the forward told Record.
"It clearly depends on Porto, a club that sells its players so well. Leaving or staying depends on Porto but I will only go if there is something concrete."
While Martinez has 10 goals this season in all competitions, he has not found the net in his last five Porto games.