Greece certainly needs a deal over reforms, which could release a vital 7.2 billion euros ($8.18 billion) worth of aid from its second bailout program. The country has millions of euros worth of loan repayments to pay over the next few weeks and months to lenders and money is running out.
The sources noted that Tsipras wanted to be more involved in the talks as they entered a "delicate and critical" phase, adding that the prime minister was focusing on the "political" side of the deal while Finance Minister Yanis Varoufakis and Euclid Tsakalatos (currently in charge of Greece's negotiating team) had been looking after the "technical side."
Talks are currently focused on resolving differences between the two sides over labor market and pension reforms.
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Greek newspaper Ekathimerini reported that the Greek negotiating team could travel to Brussels over the weekend ahead of a possible face-to-face meeting on Monday, citing sources that said creditors wanted Greece to present them with a list of proposed reforms preferably by Sunday.
A Greek government spokesperson said she could not confirm whether talks were currently taking place or whether Greece had to present reforms by Sunday.
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However, the other government sources CNBC spoke to believed the talks were likely to continue over the weekend if not Monday, in the hope that a deal could be struck.