Germany boss Joachim Low says Timo Werner is fully fit for their Nations League clash with Switzerland on Tuesday.

Chelsea striker Werner missed his country's 3-3 friendly draw with Turkey on Wednesday after suffering from flu but was fit enough to come off the bench for the final 10 minutes of Saturday's 2-1 Nations League win over Ukraine.

While Werner looks set to make his 33rd international appearance in Cologne, Low says there are fitness doubts over Julian Draxler, Lukas Klostermann and Marcel Halstenberg.

"Timo Werner is back to full strength and there are no weaknesses," Low told a media conference on Monday. "He is available.

"But we have small question marks. Draxler has an Achilles problem, Halstenberg is dealing with adductors and Klostermann has knee problems."

Germany have struggled in recent months, with the win over Ukraine marking their first taste of victory in four games.

That has led to criticism of Low and his tactics, most notably from 1990 World Cup winner Lothar Matthaus, who says Germany need to adopt a "different mentality".

Low brushed off the comments, though, and expects his side to deliver a strong performance against the Swiss.

"There are different opinions in football," Low said in response to Matthaus' remarks. "The experts have to express their opinions and that is completely fine and certainly not lacking respect. What is important is that we criticise ourselves internally, and we do that.

"I expect concentration, more precision, courage and the right attacking accents [against Switzerland]. It will be a completely different game than against Ukraine. The Swiss can defend extremely well."