The controversial leader fired the warning to Brussels after a recent spat with European leaders after several campaign rallies were cancelled on the Continent.
In March 2015, at the height of the international migrant crisis, EU leaders forged a deal with Ankara in the bid to cut the flow of migrants crossing the Mediterranean Sea into Europe.
Turkey took the role of Europe’s migrant gatekeeper in exchange for around €3 billion and a promise to fast-track EU membership talks and visa-free travel for its nationals.
Speaking to CNN Turk, president Erdogan warned he would review all aspects of Ankara’s relationship with Europe after the upcoming referendum.
President Erdogan threatened to rip up an EU agreement preventing illegal immigration into Europe
We will sit down and talk with our government and review everything from A to Z
“We can continue our economic relations with the European Union,” he said.
“But we may have to review our political and administrative ties.
“We will sit down and talk with our government and review everything from A to Z.”
The Turkish leader also claimed he would like to conduct “face to face” meetings with President Donald Trump’s administration in May, claiming he wanted talks to focus on Ankara’s dislike of its Nato ally’s support for Kurdish militias in Syria.
President Erdogan’s recent comments have attracted the attention of Brussels, who have summed the Turkish ambassador to the bloc to explain his comments on Thursday.
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Ankara and European nations – including Germany and the Netherlands – have become involved in a heated exchange of words, after the cancellation of ‘yes’ campaign rallies on their soil for dual nationals.
Both countries claimed the events were cancelled due to security concerns, however, President Erdogan accused them of preventing free speech and a return to “Nazi methods”.
He said: “You get disturbed when we say it is racism, it’s Nazism, but what you are doing fits in that definition.”
Dramatic images as 500 migrants jump the border into Spanish enclave of Ceuta Mon, February 20, 2017
Around 500 sub-Saharan African migrants crossed the fenced border surrounding Spain's North African enclave of Ceuta from Morocco
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African migrants react as they arrive at the CETI, the short-stay immigrant centre, after crossing the border from Morocco to Spain's North African enclave of Ceuta
His remarks came under fire from Germany’s new president, Frank-Walter Steinmeier, who President Erdogan threatens ruining everything Ankara has achieved with Europe.
“The way we look at Turkey is characterised by worry that everything that has been built up over years and decades is collapsing.
“President Erdogan, you are jeopardising everything that you, with others, have built”
He urged the Turkish leader to immediately “end the unspeakable Nazi comparisons”.