I think this is very likely if Pep leaves. Young, no stranger to winning, already won a title, did very well in the UCL, would've progressed further if not for Araujo losing his head, and plays the exact football CFG wants.
If Xavi doesn't take up a job for a year, I really think our hierarchy might go for him. Ex-Barca, so Txiki and co. would know him and Xavi would be around familiar faces. He's a tad more fiery than Pep but I personally like that in coaches. Pep would probably recommend him too.
He hasn’t been backed either I’d like to see what he’d do with proper backing. At Barca he had to settle for third or fourth choice on transfers and to rely on youth.