Greece's main negotiator in debt talks with international lenders said on Tuesday the two sides were closer to a deal and said he expected any accord to include a "at least a partial solution" to the issue of the country's huge debt burden. "Right now there is a discussion among the technical teams..it is obvious that they will raise objections on some points but we are moving forward on these elements, we are closer than ever," negotiator Euclid Tsakalotos told Greek state broadcaster ERT from Brussels.