Marcus Rashford hit the ground running at the beginning of this season, scoring a late winner against Hull City to secure Manchester United's third-straight league win.
Goals against Watford, Northampton Town and Leicester City soon followed, the latter coming during a 4-1 mauling of the Premier League champions.
Signs suggested the 19-year-old's meteoric rise since scoring a brace on his debut in Febuary was set to continue - but that hasn't been the case lately.
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Rashford is goalless in his last six games - he's also recorded zero assists - during which time Jose Mourinho's men have won just once.
It comes as no real surprise that Rashford's barren spell in front of goal has coincided with United's run of poor form, namely in the Premier League, where they're winless in four.
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And according to The Sun, 'concerns' have emerged at the Theatre of Dreams over the condition of Rashford, who has looked well off the pace, especially so towards the latter stages of games.
The report claims United are worried the England international is suffering from a burnout, both due to his age and the fact he's struggling with growing pains.
The club's staff are said to be wrapping Rashford in cotton wool as a result, to not only ease his pain but preserve his body and ensure it recovers.
Said concerns began when the teenager was hauled off during the recent 0-0 draw with Liverpool in the 77th minute, against whom he looked tired and out of sorts.
Since then, Rashford has been 'hitting a wall' at around the 80-minute mark.
It's all going wrong for United at the moment, though Alan Shearer believes he has a solution to the Red Devils' struggles in front of goal.
Speaking on Saturday's edition of Match of the Day, the former Newcastle United striker suggested Mourinho should start playing Rashford alongside Ibrahimovic up front, rather than on the wing.
"He looked better when Rashford went up front with him in the second-half [against Burnley]," Shearer said, per the Daily Mail. "It added more pace to the game.
"Ibrahimovic has never been blessed with great pace, but when you get to your thirties, you lose a yard of pace. Craig Bellamy came to help me at Newcastle with his pace.
"I feel as though that's what Manchester United need, to have him up front along with Rashford to ask more questions going in behind rather than facing up all the time."
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