I have had a view of the stadium in Khulna from the outside about a year ago. One thing is for sure, this stadium is really picturesque and is easily the second best stadium in Bangladesh in terms of facilities. It's capacity of 14k won't be challenged though.
For test matches, we can, at most, expect 4k - 5k people to show up. Although, for the ODIs, the stadium is going to be packed up for sure. Wish I could go and watch a match there.
"Surely Allah does not do any injustice to men, but men are unjust to themselves." - [Al-Qur'an - 10:44]