The former Croatia captain doesn't believe the Brazilian will ever be as good as the best players in the world today and feels the four-time Ballon d'Or winner lacks motivation
Messi came under some criticism towards the end of the season as Barcelona ended the campaign without a trophy while Neymar managed 13 goals and picked up 11 assists in 36 domestic and Champions League appearances.
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"Can Neymar win Golden Ball award? Not likely! He is not that good, not that powerful," Boban told Sportske novosti.
"He is an amazing talent but currently is far from being top class. He will never be Ronaldo, Ibrahimovic, Iniesta, and especially Messi."
Boban also believes that Messi is the best in the world, but feels the Argentine doesn't always give his all.
"Someone should tell him the truth about himself, Messi should face Messi. He is absolutely unprepared, unfit and demotivated the whole time, except against Real Madrid, where he played with 30 per cent of his capabilities and showed how superior he is.
"When he is fresh and if he prepares himself and wins back enthusiasm to enjoy football, he can be the best. What he has to be!
"Argentina has a middle of the range defence and midfield but up front Aguero and Higuain will open a lot of space for Leo and they can go far."