"would probably be possible" is a correct and usable phrase in written English.
You can use it when you want to indicate that something may be achievable, provided certain conditions are met. For example: "If we had enough resources, completing the project in two months' time would probably be possible."
One poll shows 57% of Leave supporters believe that if Britain left, "it would probably be possible for Britain to negotiate free trade with the rest of the EU, without having to allow EU citizens to live and work in Britain.
He argued that Britain "is already in a position to control its own borders", but indicated it would probably be possible to accommodate the UK's demand for an exemption from "ever closer union" and greater powers to set domestic VAT rates.
Although I did think it would probably be possible to get sufficient support at SIU to begin publication, I also seem to remember that it was my idea to have our panel on Research Needs formally recognize the need for such a journal.
They told me that Johan would be visiting the hospital on a given day and that it would probably be possible to speak with him for a while without having to first submit an interview request to the Thai authorities.
Hence, it would probably be possible to extrapolate the results of the present study to healthy pregnant women in general.
We think that adapting the website to use this intervention in other populations would probably be possible, but it would require careful planning and testing.
And it would probably be the worst possible thing you could implement in it, because it's exactly not what Pokémon Go is.
That would probably be the best possible outcome for the country, to be honest.
Leaving Ehrlich's odd crash pad for some chilly tech-titan mansion, you realize, would probably be the worst possible outcome for Richard.
Strictly speaking, most users would probably be happy if it were possible to impose universal usage control[31] on data submitted to providers (a sort of "reverse DRM", where end-users get to control how multi-national corporations use their data), but despite Krautheim's efforts[12], we do not believe this will be a reality in the foreseeable future.
But if a simple answer is possible, it would probably be something like this: Since Ellis Island closed, we have become a far more diverse and heterogeneous society than we ever were before, so much so that the very idea of a common identity seems at times threatened.
