Nasukawa was undone in facile fashion by the retired Mayweather in an exhibition bout in Tokyo under boxing rules.
On Sunday night, McGregor tweeted his apparent interest in having an MMA exhibition fight with Rizin FF star Tenshin Nasukawa, tagging the Twitter handles of both the UFC and his management team, Paradigm Sports, in the process to ensure they knew.
McGregor is now on a losing streak with back-to-back losses to Mayweather in the boxing ring and Nurmagomedov in the Octagon.
Mayweather made easy work of Tenshin Nasukawa, knocking him down several times before the ref steps in to stop the fight. But c'mon. Can't McGregor call out somebody he'd like to fight in the UFC instead? "Yours sincerely. The champ champ", Conor McGregor recently posted on Twitter.
"Dear Mr. McGregor, thank you very much for remembering my name".
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The Irishman would also struggle to make Nasukawa's proposed 58kg weight limit - McGregor fights at lightweight, or 66kg, in UFC, having previously fought at 61kg in the featherweight division.
It's unclear why McGregor tweeted to ask for a fight with Nasukawa, who would be even more undersized against the Dubliner than he was against Mayweather.
Rather than stay mum, Tenshin has since responded to McGregor.
"I will fight my RISE world GP this year so please watch your diet and wait for me!".
Nasukawa has reacted by proposing a kickboxing bout.