Arsenal have reached an agreement over another deal which will see Unai Emery get rid of one of his out-of-favour stars.
The new head coach did well to secure the signings of five players before the start of pre-season in early July.
The Spaniard has been charged with the task of keeping the current squad in good shape with hopes of securing a return to Champions League this campaign.
One player who has not enjoyed much playing time during his career in north London is Joel Campbell, who has spent last season on another loan spell elsewhere and after reporting back to the club this summer, his permanent is set to happen finally.
The north London club confirmed on Friday that a deal had been agreed to sell the Costa Rican to Italian outfit Frosinone Calcio.
Joel Campbell, the only season of somewhat regular action at Emirates Stadium was back in the 2015/16 season when the Gunners lost the league title to Leicester City.
The 26-year-old will try to reestablish his career at the Italian side will try to prove the Premier League giants they were wrong not handing him with first-team football.