Marcus Rashford needs to start "demanding goals" in order to emulate Manchester United great Cristiano Ronaldo, according to Kleberson.
Rashford burst onto the scene as a youngster at Old Trafford in 2015 under Louis van Gaal, impressing with his raw pace and eye for goal during a transitional period for the club.
The 21-year-old has since only managed to score 47 goals in 171 matches across all competitions, showing a lack of composure in the final third despite being given a prominent role upfront.
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Rashford contributed a modest 10 goals and six assists to United's cause in 33 Premier League appearances last season, but he already has two goals to his name in the 2019-20 campaign.