"LOL I wanna laugh… Sometimes I wish I was white and English. #realtalk" the Arsenal midfielder said in a Tweet on Monday after being asked by a fan why he had been left out of the squad for the Capital One Cup clash against Chelsea on Tuesday.
The 21-year-old later deleted his Tweet, but not before it was screen-grabbed and spread around the internet.
Frimpong then went on to claim that he was making a joke rather than accusing Arsene Wenger of racism. That does indeed seem the most likely explanation, considering Wenger's long record of recruiting black and non-English players, and the fact that Frimpong, though born in Ghana, moved to London as a child, holds a British passport, and represented England at U21 level.
"No every tweet is football related Goosh," he later wrote, before adding, "Look what ever you read tomorrow has majorly been twisted. Is a joke what people will do to start controversy goodnight people."
It's not the first time that Frimpong has been in trouble for tweeting: last year he was fined £6,000 by the FA after aiming an abusive tweet at a Tottenham fan.