Paul Merson has criticised Arsenal for selling Joe Willock to Premier League rivals Newcastle United.
Arsenal have let Willock join Newcastle on a permanent contract this summer.
The Magpies reportedly paid the Gunners £25 million in transfer fee for the 21-year-old.
Willock spent the second half of last season on loan at Newcastle from Arsenal.
The youngster scored eight goals in 11 Premier League starts for Steve Bruce’s side during his loan spell.
Former Arsenal star Merson believes that the Gunners should have kept hold of Willock.
Merson told Sky Sports: “Why would you let Joe Willock go? I’m not saying he’s the answer, but he’s come through the club and is going for £25m, that sort of money isn’t going to change Arsenal.
“It’s not like a Harry Kane or Jack Grealish sale where you get £100m and can rebuild the team.
“But Arsenal are prepared to pay Willian big money. Where is the future in that? It’s quick fixes. Surely Willock is a future player and for the present, and can be involved in the plan.”
Arsenal can be backed at 13/2 on Betfair to finish in the top 10 of the Premier League table this season.