The Belgium international has scored four goals in three appearances for the Toffees after sealing a season-long move to the Merseyside outfit from Chelsea on transfer deadline day.
Everton boss Martínez described the 20-year-old forward as the “modern target man” and is impressed by the striker’s impact since completing a switch to Goodison Park.
“He’s not a typical No.9, he’s more than that,” said Martínez.
“He has an incredible awareness and his link-up play with Ross Barkley is not coincidence.
“He is a modern target man. There aren’t many of that type around – you have the clever sort with good mobility and space awareness. Then you’ve got the powerful one and he is a mixture, which is exciting.
“He can be as good as he wants to be.”
The Everton boss added: “He hasn’t played many 90 minutes in his career and it is important he has already played two for us.
“It is like seeing a young man who has now become a proper man.”
Lukaku has scored 21 goals in 48 Premier League appearances for Chelsea, Everton and West Bromwich Albion after moving to the Blues from Anderlecht in 2011.
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