French fishermen could stage another protest in September if disagreements over licences are not resolved.
Dozens of French vessels blockaded St Helier harbour in May, claiming they had been treated unfairly.
Under the terms of the post-Brexit trade deal, they had to show evidence of their history fishing in Jersey waters, but many did not provide enough and were given restricted access.
An extension was then granted, but the Assistant Minister for the Environment says the new deadline could see new demonstrations.
“I am sure that the French will apply as much pressure as they can, but do remember that this is a contract between the EU and the British government, and the EU actually wants this solved – they’re quite keen to have the terms of the contract just applied and done,” said Deputy Gregory Guida, Jersey’s Assistant Environment Minister.
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