I agree, but realistically we have waited for so long, there was no excuse for not getting a striker wrapped up quickly.
Wenger is under more pressure than he has been before, and anything short of three top signings, if Sanchez doesn't sign a new contract, would leave us no stronger than last season.
This is how transfer windows should be done, and it's how all the other top clubs do their business, so we haven't been any more proactive than they have and, in most cases, we have done less business than the other top PL clubs.
With Wenger being so desperate and being out of the CL, as well as glaring holes in key positions, he should be doing at least this, and more.
I would be surprised if we get any other top player, after we sign Lemar, and if Sanchez leaves, that simply isn't good enough.