EU chief negotiator Michel Barnier said a Brexit deal is still possible this week but warned "it will be difficult", while speaking to the press in Luxembourg as he was was attending the EU's General Affairs council on Tuesday.
Barnier stressed that a withdrawal agreement should work for all the parties involved. "It is high time to turn good intentions into a legal text", he added.
According to reports, the EU negotiator emphasised the hurdles still existing between the EU and the UK, as no agreement on the Irish border has yet been found.
UK Prime Minister Boris Johnson is expected to table a document within Tuesday to allow enough time for a EU approval at Thursday and Friday's European Council summit.
If no progress is made on Tuesday, more negotiations will likely take place later in October, as the October 31 Brexit deadline looms.