Plenty of Unai Emery's focus this summer has been on bringing in a defender and a winger.
But the Arsenal head coach has another transfer priority now too.
Gabriel Martinelli has already joined the club from Brazilian side Ituano, but there is a feeling that another winger is likely to come into the club.
William Saliba remains the most likely defensive target for the Gunners, although Tottenham, who have made a bid, and the fact that St Etienner are adamant that Saliba return to them on loan for the season, could hinder that.
Laurent Koscielny's refusal to travel with the squad on their pre-season tour of America also leaves Emery with a puzzle to fix in the back-line.
But there is another area of the pitch that requires attention - in goal.
Petr Cech retired at the end of last season and has returned to former club Chelsea as technical and performance adviser and David Ospina was allowed to leave for Napoli.
And now Arsenal have allowed one of their young goalkeepers to go out on loan too.
Dejan Iliev has joined Slovakian side ŠKF Sered on a season-long loan deal.
He has not played in the first team at Arsenal, having joined the club from Macedonian outfit FK Belasica in 2012.
Bernd Leno is undoubtedly Emery's number one, and has taken on that shirt number for the 2019/20 campaign, but he only has Emiliano Martinez - who spent last season on loan at Reading - as back-up.
Matt Macey and Arthur Okonkwo are the keepers in the academy who could get a call-up to be third choice for the first team, but it would seem logical that Emery would like to bring another, more experienced goalkeeper into the club before the new campaign kicks off.
With less than a month of the transfer window to go, the Arsenal head coach has a few problems still to fix.
