Ukrainian president Volodymyr Zelensky is reportedly not ready to sign a controversial minerals deal with Donald Trump that may see him give away billions in critical elements and revenues.

A Ukrainian source told Sky News that there are ‘a number of problematic issues’ that need to be worked out.

‘The agreement is not yet ready to be signed, there are a number of problematic issues, and in the current form of the draft, the president is not ready to accept it’, they told the broadcaster.

‘Today, the drafts do not reflect a partnership in the agreement and contain only unilateral commitments by Ukraine.’

But just last night, Zelensky told a nightly video address that teams of American and Ukrainian negotiators are working on a draft agreement, signaling an imminent deal.

‘This is an agreement that can strengthen our relations, and the key is to work out the details to ensure its effectiveness,’ he said. ‘I look forward to the outcome – a just result.’

Trump told reporters in the Oval Office on Friday evening: ‘We’re signing an agreement, hopefully in the next fairly short period of time.’

The exact terms are not yet clear, however Trump had been pushing for $500 billion worth of minerals in exchange for continued military support.