You might be interested in interviewing Costas Lapavitsas, a Marxist professor of economics at SOAS in London, and also a member of parliament for Syriza, albeit from one of the factions further to the left of Varoufakis.
A glimpse into his thinking can be seen at this interview with Jacobin,
https://www.jacobinmag.com/2015/03/lapavitsas-varoufakis-grexit-syriza/