He should make sure Tsipras understands that his leftist bullshit must end, and he should resign as an incompetent bozo.
He will never get a debt reduction, and he has destroyed the country in 5 months that had the highest growth rate in the EU in January, a country that was coming out of its doldrums, a country with higher higher education rate than Germany (37% vs. 30%), Greeks work more hours a week than Germans(39 vs. 26), but do not pay taxes(2.3% vs. 89.5%), which is the reason they went down in the first place, and not much else!
https://www.washingtonpost.com/blogs/wonkblog/wp/2015/07/03/why-greece-and-germany-just-dont-get-along-in-15-charts/
Take a look at the charts.