The father of Amani Richards appeared to hit out at Mikel Arteta on Instagram amid reports the Gunners' boss is set to be offered a new contract.
Richards, 17, has just completed a move to Leicester having failed to make a senior appearance for the Gunners after signing his first professional contract with the north London club just three months ago.
"It's a surreal feeling, especially because it's my boyhood club and I grew up supporting them," said Richards after agreeing the deal.
"I had a lot of conversations with Per [Mertesacker, Arsenal's academy manager] and many other people at the club and I felt like they believed in me a lot and this was the best step for me in my journey."
Is Mikel Arteta doing a good job at Arsenal? Let us know in the comments below!
Despite this, Richards has left for the King Power Stadium after signing permanent deal with the Foxes on deadline day.
The Islington forward and his family are big Arsenal fans, and his father - Anthony - appears to have highlighted a problem with Arteta.
As reported by Mirror Football, the Spaniard is set to sign a contract extension with the Gunners after impressing club chiefs with the team's progress.
Arsenal are currently sixth in the Premier League and have a realistic chance of qualifying for the Champions League after missing out on Europe last season.
On seeing the news, Anthony allegedly took a screenshot and wrote on Instagram: "It gets worse and worse by the minute."
Given Richards is just a teenager, the decision for him to move on would have been taken by the club's academy, rather than Arteta himself.
It's therefore likely that Anthony's grievances were more with the direction the senior side are heading under Arteta's management as opposed to his son's transfer, though it remains unclear.
Richards didn't get a chance in Arsenal's U23 squad this season, failing to make an appearance in either the EFL Trophy or Premier League 2.
He featured seven times in the U18 Premier League - starting twice - and came off the bench in Arsenal's FA Youth Cup defeat to Colchester United in December.
According to football.london, the Gunners have received a transfer fee for Richards.
Although Arsenal have a young squad, few academy graduates are first-team regulars.
Aaron Ramsdale, Kieran Tierney, Ben White, Gabriel Magalhaes, Martin Odegaard, Takehiro Tomiyasu, Nuno Tavares, Albert Sambi Lokonga and Gabriel Martinelli are all aged 24 or under - but none of them are familiar with Hale End.
Bukayo Saka and Emile Smith Rowe are the two exceptions to the rule, with Eddie Nketiah failing to make a Premier League start this season.
Arteta claims Mertesacker is doing an "incredible" job with Arsenal's academy.
"We have a few more [youngsters] coming up," said the Spaniard last September. "I don't want to give any specific names. Per is doing an incredible amount of work. The seeds that he planted we're now starting to see."
