Changes to the law in 2024 allowed those without a permanent right to stay in the UK to stand in Scottish Parliament elections.
If a candidate was to lose the right to stay in the UK they would be disqualified from continuing as an MSP.
The Scottish Greens have pledged to support newly-elected Manivannan as they now look to apply for a graduate visa to ensure they can stay in Scotland.
A Scottish Green Party spokesperson told BBC Scotland News: “Candidates are responsible for ensuring they meet all legal and eligibility requirements before standing for election, including any matters relating to their own visa status.
“We cannot comment on individual candidates or internal selection processes, but we can confirm that nobody has been blocked from standing for the Scottish Greens because of their visa status.
“Overall, the party is satisfied that it has acted appropriately and provided relevant guidance to all candidates, where required.
“The Scottish Greens are proud to see our biggest ever cohort of MSPs elected, who represent a diverse range of communities including New Scots, and we look forward to getting to work delivering the progressive platform on which they were elected.”
Overall, the Scottish Greens had 15 MSPs elected to Holyrood.