The phrase "a future source of" is correct and usable in written English.
It can be used when discussing potential resources or origins of something that may arise or become available later on.
Example: "The research aims to identify a future source of renewable energy that can be harnessed efficiently."
Alternatives: "a potential provider of" or "an upcoming origin of".
Without a future source of financing, the medical society decided to stop operating the existing program in 2013.
But the World Service is nowadays funded, not by the Foreign Office, but by domestic licence-fee payers; and this must be a future source of worry.
But Japan increasingly sees Russia as a future source of oil and gas and as an ally in dealing with China, Asia's rising power.
The report released last week by Citizenship and Immigration Canada called foreign students a "future source of skilled labor" and added that graduates could be eligible for residency.
Higher prices for basic commodities during a period of diminished economic activity will cause many of Yemen's poorest people to begin selling what few assets they have, including livestock that could be a future source of income, Harneis says.
"How to balance integrity of the site with its use as a tourist attraction is the problem," he explained, noting that Iraq counts on Babylon as a future source of foreign tourist income.
However, Robert Downer, chief executive of the Blagdon Estate, said: "I know that Matt Ridley has always been clear and open about his mining interests, as well as on his views on climate and energy policy, and that he has also been a champion of utilising shale gas as a suitable future source of energy".
These taxes are expected to provide a crucial future source of revenue for states, especially as more consumers buy goods online.
However, just £61m came via the private sector, meaning £189m came from local councils – possibly not a viable future source of flood protection money given the spending cuts.
"They are now regarded as simply another category of immigrants" rather than a valuable future source of intellectual capital.
Seamounts are a possible future source of heavy metals.
