The pair have deals to 2027 and talks are underway about new extensions.
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Arteta is confident technicial director Andrea Berta will get both agreements secured.
"That never stops," Arteta said. "The collaboration around the club with what Andrea is doing and the agent is very good.
"The good thing is the players want to remain here and they want to be a big part of the history in this club over the next few years.
"Andrea will drive that and we will see where we go."