Thing is, lets say we do sign this guy and he picks up a medium/long term injury, would you be happy with Ankergren playing for us for a month or two? I wouldn't, I'd imagine we'd probably get an emergency loan in.
This appears to be more than a twitter rumour, an Italian media outlet has reported that we have shown 'serious interest' http://www.insidefutbol.com/2014/05/13/brighton-want-arsenal-goalkeeper-emiliano-viviano/140516/