Arshavin came for 15 million after a super hot Euros and took the league by a storm before mellowing down. Ugh... Wenger just ruined his play by sticking him on the wings.
It will be a bargain and Napoli don't have the bargaining power anymore due to losing the CL spot. I'd be delighted if we got him but that's just dreaming. 20 - 25 would be good enough. We can give them Bendtner + 20 million.
Why would you be interested in Lavezzi? You're already going for van Persie apparently and Hazard too. I don't think Lavezzi would go to Liverpool. It'd be either PSG or Chelsea--if they win the whole damn thing.