Sir Keir Starmer has said the European Union does not have faith in Theresa May to uphold her vows for Brexit.
The Prime Minister has managed to quell the reported Cabinet rift after engaging in crisis talks with Boris Johnson in New York ahead of a key address on Brexit in Florence.
The Foreign Secretary had caused controversy by writing an article for the Daily Telegraph about his vision for Brexit, which subsequently fueled speculation he would resign if the Prime Minister's speech didn't match up.
Now, the shadow Brexit secretary has claimed EU officials feared the Prime Minister wouldn't be able to uphold her promises for the negotiations.
In an interview given to The Guardian, the Labour MP for Holborn and St Pancras said "high expectations" by EU figures were also mixed with scepticisim on May's ability to deliver her vows.
His view comes from a meeting in Brussels, where he had meetings with Michel Barnier - the EU's chief negotiator - among other key officials.
Starmer said May had to deliver "a real position" and avoid "inconsistency" in her keynote speech.
The Prime Minister is to deliver the address in Florence on Friday.