I really believe that Wenger's insistence of buying players from foreign leagues means that many quality players from the EPL who could improve the squad slip under the radar and are never identified. I'm NOT talking about people's nationalities here, rather the league that they play in. For example, someone like Samba would fit the bill for me, because he has played in the EPL for a long time, so knows how to cope with the physical nature of the game and understands what it takes to succeed here. While when we look for a player from abroad, he'll take time to get used to the pace of the game, and how often do we hear foreign players being shocked at the speed and intensity (and foul play) of the game in England?
Given that we're in such a difficult situation at the moment and need immediate solutions to our weak squad, surely it makes some sense to look locally for signings? Apparently, Wenger isn't interested in players like Cahill because he's looking at Hummells and Subotic. Now really, are the aforementioned duo really that better than Cahill? He's also looking at M'Vila from the French League, even though players like Parker could slot in immediately and understand the English game well.
I think it would be helpful if Wenger for once looked domestically for players, rather than defaulting to the French league everytime. I'm not saying that there aren't top players in the French League, but I think Wenger sometimes forgets that the same is true for the Premier League.