Chelsea's Timo Werner and Bayern Munich's Leroy Sane take part in Germany training ahead of Spain clash - in pictures

The second Uefa Nations League gets under way on Thursday, headlined by a blockbuster contest in Stuttgart

Timo Werner during a training session at ADM-Sportpark in Stuttgart ahead of Germany's Uefa Nations League group stage match against Spain. Getty Images

Leroy Sane, Matthias Ginter and Timo Werner attend a training session ahead of Germany's Uefa Nations League group stage match against Spain. AFP

Timo Werner challenges Kevin Trapp during a training session at ADM-Sportpark ahead of Germany's Uefa Nations League group stage match against Spain. Getty Images

Robin Gosens during a training session at ADM-Sportpark ahead of Germany's Uefa Nations League group stage match against Spain. Getty Images

Toni Kroos and Antonio Ruediger look on during a training session at ADM-Sportpark ahead of Germany's Uefa Nations League group stage match against Spain. Getty Images

Germany manager Joachim Low during a training session at ADM-Sportpark ahead of Germany's Uefa Nations League group stage match against Spain. Getty Images

Emre Can tackles Suat Serdar during a training session at ADM-Sportpark ahead of Germany's Uefa Nations League group stage match against Spain. Getty Images

Julian Brandt plays the ball during a training session at ADM-Sportpark ahead of Germany's Uefa Nations League group stage match against Spain. Getty Images

Niklas Suele and Ilkay Guendogan look on during a training session at ADM-Sportpark ahead of Germany's Uefa Nations League group stage match against Spain. Getty Images

Joachim Low during a training session at ADM-Sportpark ahead of Germany's Uefa Nations League group stage match against Spain. Getty Images

Emre Can tackles Leroy Sane of Germany during a training session at ADM-Sportpark ahead of Germany's Uefa Nations League group stage match against Spain. Getty Images

Florian Neuhaus during a training session at ADM-Sportpark ahead of Germany's Uefa Nations League group stage match against Spain. Getty Images

Timo Werner and Matthias Ginter during a training session at ADM-Sportpark ahead of Germany's Uefa Nations League group stage match against Spain. Getty Images

Leroy Sane during a training session at ADM-Sportpark ahead of Germany's Uefa Nations League group stage match against Spain. Getty Images

Emre Can tackles Suat Serdar during a training session at ADM-Sportpark ahead of Germany's Uefa Nations League group stage match against Spain. Getty Images

Bernd Leno makes a save during a training session at ADM-Sportpark ahead of Germany's Uefa Nations League group stage match against Spain. Getty Images

Players may have only recently returned to their clubs to prepare for the new season, but for many preparations have been briefly interrupted by international duty.

The second Uefa Nations League gets under way on Thursday, headlined by a blockbuster contest between Germany and Spain in Stuttgart.

So while Europe's domestic leagues are scheduled to start in the next two weeks, players involved with their national teams are already taking time away.

Germany's squad, including Chelsea's new striker Timo Werner, winger Leroy Sane - recently signed by Bayern Munich from Manchester City - and Borussia Dortmund's Julian Brandt, took part in a training session at ADM-Sportpark on Monday ahead of the Nations League group opener against Spain.

Take a look at the best photos from the training session in the photo gallery above. To move on to the next slide, click on the arrows, or if using a mobile device, simply swipe.