The Gunners are close to getting one over rivals Tottenham, with the midfielder set to sign on loan for Emery’s men.
Ceballos is still well regarded in La Liga but has dropped down the pecking order at the Bernabeu.
Zinedine Zidane deemed him surplus to requirements and the two London clubs were battling for his signature.
According to Spanish daily AS, Emery’s personal intervention helped Arsenal seal the deal.
“Arsenal boss Unai Emery is closing in on Dani Ceballos”
He reportedly told his compatriot that first-team football was guaranteed at the Emirates – and he could end up playing 40 games during the forthcoming season.
Aaron Ramsey has packed his bags for Juventus and Arsenal now have a void to fill in midfield.
Spurs, in contrast, are more well stocked.
Mauricio Pochettino spent big to sign Tanguy Ndombele who is expected to have a starring role in their side.
Seville were also battling to secure Ceballos from their La Liga rivals.
However, they couldn’t compete with the financial muscle of the Premier League’s elite.
Arsenal are also closing in on William Saliba from Saint-Etienne.
The exciting young defender will complete a medical before heading back to France on loan for the 2019/20 season.
More fresh faces are still expected, but Emery has made it clear he won’t spend for the sake of it.
“Really I am with patience because we want to choose the best solution,” he said after Arsenal’s 3-0 pre-season win over Fiorentina.
“Some players are very expensive and we are waiting for this possibility.
“We don’t want now to go to the second line of players. We are waiting. We have very good players.
“We have very good young players. We are aware also that we need to improve some players in this squad.
“I want to sign one, two, three or four players only if we can be sure they are coming to improve our team.”
Celtic full-back Kieran Tierney remains on the agenda.
Wrangles over the structure of his proposed £25m transfer have derailed the move, though.