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.
"And be true to every promise- for, verily you will be called to account for every promise which you have made." - [Al Qur'an - 17:34]