Toni Kroos is the latest personality to question Leroy Sane's attitude.
Surprisingly, the German winger was omitted from Joachim Low's 23-man World Cup squad, that's despite producing heroics for City in the 2017/18 campaign, with goals and assists.
Of course, it didn't work out for the Germans who dramatically crashed out of the group stage round.
Meanwhile, Sane returned to City for the new season following a frustrating summer. Though he's failed to break into Pep Guardiola's starting XI on a few occasions.
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In fact, Sane was even excluded from City's match day squad over the weekend as the defending Premier League champions beat Newcastle United 2-1 without his luxurious services.
The Spanish boss quizzed Sane's mind set, and his German colleague Kroos has also weighed in.
"You sometimes get the feeling that it doesn't matter to him if we win or lose," Kroos told BILD via Mirror.
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"It's about showing his qualities. Then he can be an absolute weapon for us."
However, Kroos believes the talented 22-year-old 'has got everything to become a world-class player'.
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"He has got everything to become a world-class player, but sometimes, he needs to be told what to do.
"If he brings all his quality to the pitch, he can help us a lot," he added.
Interesting assessment following Guaridola's verdict.
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Sane has since been recalled to the Germany fold ahead of international fixtures versus Peru and Russia.
And, as for club duty, City resume their defence of the league title by hosting Fulham next Saturday.
Will Sane return to City's team? Watch this space.
Featured Image Credit:Topics: Manchester City, Football News, Football, Toni Kroos, Germany, Leroy Sane