They're in two camps.
The ones who think we could buy 6 new first XI players, make it work and win the title next season.
And the ones who think we're absolutely fucked and we'd need to integrate 5-10 new players into the first team squad over several seasons to have a chance.
The first camp I think are underrating the difficulty of turning that many new faces into a working team quickly. We'd probably be a long way off the pace by the time we got organised.
The second camp are overly pessimistic, but that's just an opinion I guess.
Either way, just spend some fucking money Wenger!