Bournemouth boss Eddie Howe has handed Jack Simpson a new two-and-a-half-year deal with the club.
The 21-year-old defender is now contracted to the Cherries until at least June 2020.
He has made three-first team appearances for Howe's side this season and scored on his debut during the 3-1 Carabao Cup fourth-round victory over Middlesbrough.
Meanwhile, Howe thinks Lewis Cook can be as good as Jack Wilshere, who spent last season on loan at the Vitality Stadium, and has set the former Leeds United player the target of being involved in this summer's World Cup.
Cook has featured in 14 of Bournemouth's Premier League games this season and could play against the Gunners on Sunday. Bournemouth, 500/1 to be relegated this season, are 14/5 to beat Arsene Wenger's team.
Howe said: "I can see why you make the comparison [between Cook and Wilshere]. I always think players are slightly different but there are links between Jack and Lewis - they are a similar stature, for a start.
"They are technical, creative players with an eye for goal. They are difference-makers.
"I've got a lot of time for Lewis, I think he is going to be an outstanding player and if he can get close to Jack's levels in the next few years, it will be great for him.
"I think the World Cup should be Lewis' target, I really do. Why not?"
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