The 21-year-old Belgium international has signed a five-year deal with the Toffees after completing a £28m move to Goodison Park on Wednesday.
Lukaku, who scored 15 Premier League goals during a season-long loan at the Blues last season, has been handed the number 10 shirt.
However, Liverpool legend Carragher feels Everton should have taken the No9 shirt off Ivorian Kone and given it to their club-record signing.
I know Kone has the number 9 but an iconic number at Efc should be used for your main man up top. Take it off him!
— Jamie Carragher (@Carra23) July 31, 2014
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