Tonight's statements from leading EU figures like Donald Tusk or Manfred Weber indicate that they need to see an actual reason and purpose for extending Article 50. What does the UK want to do with an extension, specifically? Holding a snap election? Or a organizing a second referendum? At the same time, the EU has made clear that it doesn't consider wanting to renegotiate the deal another time as a legitimate reason.
They don't need a legitimate reason to revoke Article 50 (which they can do unilaterally) and that, in essence, could act as a two year delay if they reinstate Article 50 shortly thereafter.
