Zimbabwe are playing razzak too easily. He's in the team for his bowling and he's not performing. So I'd replace him with Nazmul Hossain.
I'd also like to see Shuvgato play, probably in place of Ash. But as others have said, Shuvgato is more of a longer version player and should have been tried out in the tests..
Also, either Imrul or Tamim needs to be dropped and replaced by Zunaed (Nafees gets one more chance in my book because of his form in the 1st test)...