The club have now confirmed Welbeck will miss at least three weeks, per Sky Sports.
Welbeck, who has had success playing in a deeper role this season, will hope to be back for Arsenal's trip to Watford on October 14th, which will follow a run of three home games against Doncaster, Brighton and West Brom and an away tie against BATE Borisov in the Europa League.
Apart from missing 4 games for Arsenal during the recovery month, Welbeck is likely to miss out England's last two World Cup qualifiers against Slovenia and Lithuania.
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Johnson argued against paying for continued access to Europe's single market - a possibility other ministers have left open. But Tobias Ellwood, the Defence minister, acknowledged there was now disunity within the Conservative Party over Brexit.
"Danny has a scan today, we don't know how bad his groin injury is but he will certainly be out until the worldwide break", Wenger told the club's website.
However, Wenger also confirmed that a number of first-team regulars will not feature due to fitness problems, rather than simply being rested, with both Danny Welbeck and Mesut Ozil ruled out. "He has a little inflammation of his knee".
The Gunners manager will name a second string team for the clash against Doncaster, with Jack Wilshere and Calum Chambers set to feature from the start.
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Sony has said it is "willing to have the conversation" but it doesn't seem to be any rush to throw Xbox gamers a bone. Sony later ruled out cross-platform play with Minecraft on the Xbox One as well.
Wenger also spoke about French pair Mathieu Debuchy and Francis Coquelin.
"Yes, [Calum Chambers] will be involved against Doncaster". The Englishman has played all five of the Gunners' league matches so far this year, scoring three goals and adding an assist.
Goalkeeper David Ospina, club captain Per Mertesacker, Mohamed Elneny, Ainsley Maitland-Niles, Theo Walcott, Alexis Sanchez and Olivier Giroud all started against Cologne before dropping out of the starting line-up for Sunday's draw at Stamford Bridge.
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German Chancellor Angela Merkel has called for action to be taken to fix the reputation of the country's vehicle industry. They crashed out of parliament that year but are hoping to re-enter the legislature on Sunday as the third-largest party.