By John O'Donnell and George Georgiopoulos FRANKFURT/ATHENS (Reuters) - The European Central Bank could ease a funding squeeze on Greece this week, but it would first need Greek lawmakers to sign off on reforms and to be assured that payment due soon from Athens will be made, people familiar with the matter have said. The hurdles are significant but with Greece's leftist government likely to harness cross party support for reforms, marking a u-turn after a 'no' vote to austerity, there is a prospect of gentler ECB treatment to inject fresh cash and let shuttered banks open. Should parliamentarians in Athens vote on Wednesday to pass stringent laws, that could prompt Europe to agree temporary or 'bridge' finance for Greece, allowing it to clear a large debt to the ECB on Monday.