How Has Thomas Müller Adjusted To Life After Professional Soccer?

Today my friend asked me if you can use has instead of have here. I'm not sure how to explain the grammar simply.

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I Have Read A Similar Question Here But That One Talks About The Usage Of Has/Have With Reference To Anyone.

I am wondering if the following sentence is correct. Since there is no other. Can anyone explain me in a simple way?

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I'm not sure how to explain the grammar simply. Here, i wish to ask a. Today my friend asked me if you can use has instead of have here.

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Thomas Müller finalizing deal with Vancouver Whitecaps after 25 years

But De Thomas Müller

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Thomas Müller “FC Bayern is probably the hottest team in Europe right now"

Thomas Muller looking forward to continuing his journey after extending

Bayern Munich star Thomas Muller chooses the greatest player in soccer

Thomas Müller to leave Bayern Munich at end of season ESPN

World Cup Most Goals Players In FIFA History [2022 Update] Players Bio