Excuse me, Nasir Hossain has had 9 innings to his name and averages 35+. Get your facts right. As for Riyad, where are you going to bat him then? Only 2 and 3 are in need of replacements. And he won't be batting at 2 or 3 for sure.
"Surely Allah does not do any injustice to men, but men are unjust to themselves." - [Al-Qur'an - 10:44]