According to Roberto Martinez, every club “would love to have a Romelu Lukaku in their squad”.
Martinez is happy Everton acquired Lukaku from Chelsea at a club record fee of £28 million, with the Belgium forward scoring 11 goals in his last 10 appearances.
Lukaku is in need of champions league football, a thing that might not come easy at Everton.
He told a media conference on Wednesday: “Over the calendar year we can see he is in a really mature stage of his career.
“If you look at the way he works for the team, he has taken his game to the next level with the way he holds the ball up and brings other players into the game.
“He doesn’t want to stand still. For such a young boy to have such a high level of consistent performance is important to us.
“We’re under no illusions that everyone would love to have a Romelu Lukaku in their squad and that’s why we made such a big investment in him.”
The future of Lukaku’s fellow forward Steven Naismith is less clear, however, with reports Norwich City have revived their interest in the Scotland international.
Martinez added: “We all know there was one Premier League club showing interest in Steven in the previous window, that’s an open secret. There’s nothing to comment on [now].
“During January we know how we need to need to move forward. We need to make sure we go through the window in the best possible way.”