Pierre-Emerick Aubameyang was involved in his first Arsenal training session, but he was the only one out on the field at London Colney.
The Gabonese striker was put through his paces alone, with Arsene Wenger closely watching his every move.
Aubameyang has missed Dortmund training sessions – and even games – in recent weeks after trying to force a move away.
Wenger will be assessing Aubameyang’s fitness ahead of making a decision on when he will make his debut for the Gunners.
Take a look through the gallery to reveal the best snaps of Pierre-Emerick Aubameyang’s first Arsenal training session.