The post garnered nine thousand retweets at the time of publication, with United teammate Marcus Rashford commenting on the post with laughing emojis.
Speaking after the game, Kettlewell acknowledged he'd heard about his doppleganger posting on social media.
“So I'm led to believe I think maybe it's my doppelganger of whatever they say!' he said after a 1-0 victory for his side.
“Fortunately enough I'm not a social media guy so that one's a wee bit wasted on me!"
— David de Gea (@D_DeGea) August 3, 2020