I actually really like Lewis at Norwich. Buendia too. Probably wouldn't go near any of the others par Cantwell or Godfrey for 15m max.
As for Villa, I'd take Heaton as a backup GK if needed, or Krul actually thinking about it. Both homegrown and better than Bravo.
As for Bournemouth, Ake would be the ideal LCB backup and can cover a few other roles if needed. Brooks and Wilson both good too but seem consistently injured, if we ended need in dire need of homegrown depth for the bench I wouldn't say no though.