Chelsea striker Pierre-Emerick Aubameyang says he's always had to prove himself through his career.

With his new Chelsea teammate Wesley Fofana, Aubameyang has revealed some of the toughest times during his career.

He said: "I've been through a lot of bad moments, not injuries."

He went on to add: "I was okay but at the beginning of my career everyone was talking about me as a sprinter only, this hurts sometimes because you know where you've come from, you know you went through a lot of stuff and you always try your best and some people, even from your club say you're not good at playing football."