Talks to agree a new €86bn bailout for Greece ran into trouble on Friday after Athens raised hurdles for negotiators in the Greek capital, forcing them to postpone their arrival amid renewed acrimony. Alexis Tsipras, the Greek prime minister, agreed last week to “fully normalise” talks with creditors on the ground in Athens after resisting their presence for months — a key demand made by eurozone leaders when they agreed to reopen rescue talks after coming close to pushing Greece out of the eurozone. But three senior officials from Greece’s bailout monitors said Athens had instead demanded restrictions on negotiators, including on whom creditors could meet and what topics were to be discussed in the talks.