Chelsea are watching St Etienne striker Pierre-Emerick Aubameyang.

The Daily Mail says the European champions had scouts watch the 23-year-old on Friday night as Aubameyang scored his 17th goal of the season in his side's 2-2 draw with Rennes.

He is under contract until 2016 but has already declared his intent to leave in the summer with Newcastle and Borussia Dortmund also watching regularly.