UK Prime Minister Rishi Sunak is pushing to secure a post-Brexit trade deal with the European Union for Northern Ireland.
Irish Prime Minister Leo Varadkar said a deal was close, but not guaranteed.
Lawmakers from Sunak's Conservative Party have been told to be in parliament on Monday, indicating a deal could be reached soon.
However, no agreement has yet been made between the UK and the EU.
Talks between the UK and EU over revising post-Brexit trade rules for Northern Ireland are progressing, according to Irish Prime Minister Leo Varadkar.
However, the deal has yet to be finalised.
UK Prime Minister Rishi Sunak said he is "giving everything" this weekend in a bid to secure the deal.
Lawmakers from Sunak's Conservative Party have been asked to be in parliament on 1 March, hinting that an agreement may be made soon.
While a Downing Street source described negotiations as positive, the taoiseach said that a deal was not guaranteed, despite being a few days away.