He isnt insane at all, he has been quite cordial and understanding with Lavezzi quite alot, but there is a reason he is putting down his foot now, Lavezzi REALLY has been a big ass with them, completely being unprofessional and being quite of a dick outside the pitch. And demanding double salary when he has did shit last season etc.
You cant let players ride you so much, everything said by Lavezzi and few other players close to him wouldnt be accepted elsewhere, totally boozing, going to whore houses, goes to party in his yatcht or whatever when there is training camp etc. Stuff that wouldnt be accepted for a second elsewhere.
P.S If Trez leaves, even if it would be direct competition with Giovinco, I would sign Lavezzi if it means a reasonable price, nothing over 15m IMO.