I've read that Bolasie declined playing in the 2013 African Cup of Nations in order to work on his club form. Hopefully he does the same for us this season. With Bolasie, Gueye, and maybe the new Kone as well, we could be really thin in January and February.
Personally, I think Bolasie is a modest improvement over what we have at that position and will definitely improve Everton. Do I think he's worth £25-£30 million? Hell no. I feel like we're a bit panicked due to previous offers falling through and the window closing soon. I'm hoping that we don't blow through too much money during this window so we'll have some left when a truly world-class player is available (and actually wants to join us).
It's a delicate line to walk. If he we don't overspend now, we may not improve on the pitch and won't be able to draw bigger names next summer. On the other hand, our funds aren't unlimited and there are still at least 5 or 6 teams with more money than us. That means that we have to continue to spend our money wisely if we want to compete for a top 4 spot.
Regardless, he's an Everton player now and should provide a needed spark. Can't wait to see how he fits with the rest of the club.