The Gunners defender will have a medical at Pride Park on Thursday before finalising his move to the Championship club
Arsenal are set to land a cash boost from the sale of Poland Under-21 international Krystian Bielik as he closes in on a £10 million ($12m) move to Derby County.
Arsenal had hoped to convince the central defender - who can also play in midfield - to sign a new contract at the Emirates before heading out on loan again.
But Bielik made it clear that he had no interest in spending another season on loan and that he wanted a permanent move, if he wasn’t going to get a chance under Unai Emery.
"I will definitely not go back to the Arsenal U-23 team.
"At this stage it wouldn’t make sense.
"If I do not receive the possibility to join the first team permanently, I will have to look for other solutions.
"I feel like a senior player now so I want to play senior football.
"This is, however, not the right moment to discuss these issues as I want to be 100 per cent focused on the European Championship."
Arsenal have had plenty of interest in Bielik this summer, with several Championship clubs keen, while AC Milan were also linked with a potential move.
But the centre-back now looks set for a switch to Derby after the Gunners agreed a deal with the Rams that could eventually reach £10m with add-ons.
Bielik will undergo a medical today with the Championship side before finalising his move to Pride Park.