He's not going for 45m. Barca are trying to sell him, not keep him on the shelf.
The 45m idea was related to speculation that Barca had offered Sanchez + 15m for Vidal, and that Vidal was being rated at 60m.
I'm disappointed if he's not interested in us. If we've made Barca an acceptable offer and we've given Sanchez the best wages offer and he's turned us down then that's a shame - but I don't believe the Italian press (which is where the Express are getting their story) would want to say anything different, and I'm not at all convinced that they actually know.