No chance Bielsa will change anything (even if we had lost 3 in a row ) but it would be nice to give Bamford a rest against a struggling team. I don't think there's much of a risk starting Roberts or Augustin and change it at half time if it didn't work. Definitely won't happen as we are doing well.
Bielsa made big changes at half time against Hull, so I have faith that he sees where the issues are and has solutions beyond the obvious like-for-like changes of personnel.