Competition for the league is getting stiffer, which is why it's a relief that we're finally showing ambition and strengthening in the right departments.
Staying competitive is all we can ask for at the moment - that means not rolling over for the big boys like we did last year and staying within touching distance of the title without imploding after March.
Whether or not we actually go on to win the thing to me is secondary. Sanchez' signing gives me hope that we'll continue to address the mistakes we've committed in the past and move closer to becoming a top club again, rather than an also-rans.
Winning the FA Cup has lifted the pressure off Wenger, meaning failure to lift the league in the next couple of seasons will be forgiven, so long as we keep showing more ambition than we've done in recent years and continue to "move forward", if I can be so euphemistic.
In short, this signing is a show of such ambition. And the fact that it's been done this early is encouraging - particularly when set against the last few transfer windows.