Newly sworn-in Greek Prime Minister Alexis Tsipras is hoping to re-appoint Euclid Tsakalotos as his chancellor on Tuesday but is struggling to persuade the respected bailout negotiator to take on the job. State radio reported that Tsakalotos, who impressed euro zone counterparts for his constructive approach in bailout negotiations when hard-line leftist firebrand Yanis Varoufakis resigned, is reluctant to take the post again. It gave no reason, but Tsakalotos, a Dutch-born British-educated Marxist economist, is a member of the so called '53+' faction in Syriza, some of whose members recently expressed concerns the party was moving away from core leftist values in favour of holding on to power.