The 21-year-old Belgium international has put pen to paper on a five-year deal with the Merseyside outfit on Wednesday after swapping Chelsea for Everton.
This is a big moment for Everton’s history and the perfect way of getting the squad ready for the start of the season
And Toffees manager Martinez is confident that Lukaku, who scored 15 goals during a season-long loan at Goodison Park, can continue to improve.
“Welcoming Romelu Lukaku back to Everton on a permanent basis is the news that all Evertonians wanted to hear,” Martinez told Everton’s website.
“We know that Romelu is still a young man and the potential that he has is quite unique, and we are desperate to see him enjoying his football and to watch him grow as footballer in the years to come.
“The arrival of Rom is more than just a signing, it’s the fruition of a lot of hard work to get the player we wanted. This is a big moment for Everton’s history and the perfect way of getting the squad ready for the start of the season.”
Everton chairman Bill Kenwright added: “Romelu was a massive part of the jigsaw for Roberto and Everton and nobody is more pleased than me that an 11-month quest ended at lunchtime today, thanks hugely to the efforts of all parties, including Rom, his representative, Chelsea and, of course, Roberto.”
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