It is set to be a sprint finish of a summer for Arsenal.
Unai Emery saw Aaron Ramsey, Danney Welbeck, Petr Cech and Stephan Lichtsteiner leave his squad after a season that left the Gunners outside of the Champions League again.
The Gunners have plenty of work to do in replacing these four players and kicking on in the Spaniard's second campaign as head coach.
However, they have so far made only one signing this transfer window.
And, that signing was 18-year-old forward Gabriel Martinelli.
The youngster joined from Brazilian side Ituano but Arsenal are yet to sign any established senior players, and time is ticking.
William Saliba could be signed this summer, although the Saint-Etienne defender is expected to be loaned back to the Ligue 1 side for the 2019/20 season.
He could prove to be exactly what the Gunners need once he has arrived but the club need a boost right now.
So, who could Arsenal sign over the four weeks?
We booted up Football Manager 2019, input the deals that have already taken place this summer across Europe and waited to see what the game predicted.
Hold on to your hats. From here on out things get pretty wild!
Arsenal transfers - 2019/20 season
Transfers in: £77 million rising to £92.75 million
Ryan Sessegnon (Fulham) - £53 million rising to £64 million
Maycon (Shakhtar Donetsk) - £13.25 million rising to £16.75 million
Viktor Fischer (FC Kobenhavn) - £10.5 million rising to £11.75 million
Morgan Rogers (West Brom) - £160,000 rising to £550,000

In the real world, Tottenham Hotspur are leading the race for Sessegnon, but the simulation believes that the Gunners could beat their rivals to the wide man.
Forget Barcelona forward Malcom. Arsenal signed Brazilian midfielder Maycon!
And despite hardly impressing English audiences during his time with Middlesborough, the Gunners plumped for a surprise move for Viktor Fischer.
While these names may be surprising, their positions are not.
Arsenal are seeking to sign a midfielder, after losing Ramsey, and want a versatile forward to fill Welbeck's role. Maycon and Fischer fit those niches, respectively.
Sessegnon and Rodgers add further depth out wide, although down the left rather than that troublesome right wing position.
But who was moved on by the Gunners? Brace yourselves...
Transfers out: £64 million
Lucas Torreira (Paris Saint-Germain) - £52 million
Calum Chambers (Everton) - £12.25 million
Dejan Illiev (Vardar) - £57,000 rising to £71,000
Eddie Nketiah (Cardiff City) - Loan

Yes, that's right. Torreira sold, and for less than real world fans might hope for if such a deal were to happen.
Calum Chambers was also let go from the first team. Overall, that gave Arsenal a net spend of a mere £25million having lost important players in defence and midfield. That doesn't seem so wise, Unai!

Football Manager 2019 suggests that Arsenal will spend this summer, but only if it's offset by player sales.
However, this is just a simulation, so let's see what happens over the next four weeks...