Borussia Dortmund wants to retain Pierre-Emerick Aubameyang as long as possible. However, if there is a tempting offer that comes, they may just release the striker. Aubameyang played fantastic this season, scoring 20 goals in the Bundesliga. He was top scorer temporary, one-goal lead over Bayern Munich striker, Robert Lewandowski.

In other competitions, Aubameyang also productive. The Gabon international striker scored two goals in the DFB-Pokal and seven goals in the Europa League. If added together, the total tally reached 29 goals in 29 games this season. Aubameyang sharpness reportedly made Arsenal are interested in signing him to the Premier League, but Dortmund hoping to retain 26-year-old striker for a long time.

"If an offer comes, then we have to discuss. If the offer was to reach hundreds of millions, then we also have to talk to the players," said Dortmund CEO Hans-Joachim Watzke told Sky.

"I'm not worried about that because at the moment we want to keep it as long as possible," said Watzke.

Aubameyang, who recruited Dortmund from Saint-Etienne in 2013, is currently under contract until 2020.