Please tell me you're joking. It will never happen but saying you wouldn't take Bale because he may not fit in? You wouldn't take Ronaldo or Messi either? may ruin the chemistry. The lad is world class and holds a special regard for the club if there was any realistic possibility of him wanting to come back we should pay just about any price.
I'm not sure anyone could actually pass on Ronaldo and Messi, but it's a closer call than Bale. The team would have to carry the former two defensively, which may not ruin the chemistry, but it would change the ethos of the team spirit which has carried us this far. Bale is behind the other two in ability (though he has a few years on them), but he would be much more likely to let his ego go and work as part of the unit. He has the defensive skills given his initial position as a FB and I think his struggle during his first years with us has made him more humble.