Not worried about Nasri at all.
Milner for Yaya. He flat out doesn't have the stamina. Why he was born with one lung, I don't know, but playing twice a week is clearly impossible for him at this stage of the season. Those two should trade off.
Replacement for Barry. I'm sorry, but I never bought this Barry nonsense. He has good aspects of his game but the negative aspects are exposed badly against quality, mainly his pace and his tendency to give the ball away. Hargreaves maybe?