I wouldn't do that exchange or whatever that would be. SES can wait till the Summer and Milan will sell him anyway.
Zaza started here pretty well IMO and that's not the time to let him go. Keep him, promise more chances and give it to him. Let's see if he can build on this.
SES is a very big gamble right now, Zaza as for now is on the rise. If Berardi comes and Morata stays we won't even need SES anymore.
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That's not true IMO. Fabregas should cost about 30m IMO, 35m at best if there's interest from other clubs. Bayern for example could dispose Xabi Alonso and replace him with Cesc. Just like that. Same goes for City, every Summer they have the same soap opera with Yaya. Experienced Cesc will get the job done, especially if Madrid again refuses to sell them Isco.
Someone else said Chelsea wouldn't sell to rivals. I don't agree, just take a look at Mata, Cech or Lukaku, etc. all that matters is money. Chelsea will have to rebuild, they'll need it.