Ghana target Eddie Nketiah was on target for Arsenal as he sent the club into the quarter finals of the Carabao Cup on Tuesday evening.
Substitute Calum Chambers' header crept over the line seconds of coming off the bench, before former Leeds loanee Nketiah pounced to wrap up the tie.
The forward cleverly flicked the ball over a stranded Illan Meslier and just did enough to nudge it over the line before the visiting keeper could recover.
"I have full belief that he is going to be a top, top player and hopefully at Arsenal," said Arteta, who has helped develop a number of young Arsenal players, including Emile Smith Rowe and Bukayo Saka.
"I'm happy to have him, he is our player, I regard him really highly and from my side I want him to stay."
Leeds had looked the more threatening side until the first goal in an open and entertaining game against a much-changed Arsenal side at Emirates Stadium.
But Arteta's outfit were comfortable after establishing their lead as the visitors became stretched looking for a way back into the game, with Nketiah impressing.