"I think it's increasingly likely already that we'll have to take that option" (Image: GETTY/BBC )
Mrs May’s deal was rejected by Parliament last week by a margin of 230 MPs. She is in talks with Brussels and MPs in a bid to get the deal through. Mr McDonnell made the comments during an appearance on BBC Newsnight.
He said: “Yvette Cooper has put an amendment down, which I think is sensible.
"It says to the Government you've run down the clock so much, it looks as though if you can't get a deal by February 26 then the Government will have to bring forward proposals to extend that.
"So I think it's increasingly likely already that we'll have to take that option because the Government has run the clock down."
Asked whether Labour would then back the amendment Mr McDonnell replied: “It’s highly likely but we’ll go through our normal process of consultation with our members.”
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