Lokonga has not travelled with the Anderlecht team mates for their six-day pre-season training in the Netherlands, staying at home to finalise his move to the Emirates Stadium.
Arteta has been on the watch for a defensive midfielder to partner Thomas Partey and his search seem to have been successful.
However, Belgian outlet Walfoot reported that The 21-year-old is very eager to complete the deal "as soon as possible" and is simply ready to travel to London to make it official.
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The defensive midfielder, who has represented Belgium at Under-21 stage, came through the Anderlecht academy and made his first team appearance at the age of 18 in December 2017. Since then he has made 69 appearances for the club, netting three times.