Manchester United have joined the battle for Barcelona striker Pierre-Emerick Aubameyang.
Barca are open to selling the Arsenal captain as they battle to register Jules Kounde and splash out on more additions.
Aubameyang, 33, worked with Blues boss Thomas Tuchel at Dortmund and would prefer to join a club that can offer Champions League football, if he is forced out of Barcelona.
United are also up against Chelsea in their bid to sign another Barca star, Frenkie De Jong.