Arsenal have confirmed the £30million ($44million) signing of Switzerland midfielder Granit Xhaka from Borussia Monchengladbach.
Xhaka has completed his medical and will join up with his new team-mates after Euro 2016, where he is expected to star for Switzerland.
The 23-year-old has been among the outstanding central-midfield performers in the Bundesliga in recent seasons.
And Wenger said: "Granit is an exciting young player, already with good Champions League and Bundesliga experience.
"We have been watching him for a long time now and he is a player who will add quality to our squad.
"We wish Granit a good Euro 2016 with Switzerland and look forward to welcoming him to Arsenal ahead of next season."
Xhaka joined Monchengladbach in 2012 from his hometown club FC Basel, where he spent 10 years progressing through the youth and senior ranks and won two Swiss titles.
He made over 100 Bundesliga appearances for Monchengladbach and scored six goals.
