Borussia Dortmund CEO Hans-Joachim Watzke is optimistic the club can convince Marco Reus to stay and has rubbished speculation Shinji Kagawa could rejoin the club.
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Reus, 25, has been one of Dortmund's most spectacular performers since signing a five-year deal with the Ruhr Valley outfit when he joined them from Borussia Monchengladbach in 2012.
The Germany international, who missed the World Cup through injury, is reportedly being courted by some of Europe's biggest clubs amid media reports he has a clause in his contract that could be activated at the end of the 2014-15 season.
However, speaking to BILD, Watzke said he felt the Bundesliga runners-up could keep one of their most prized assets at the Signal Iduna Park.
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"We believe that we can offer him a good overall package. We are trying to tie him to BVB long term. Whether that works, only time will tell," Watze said, but stopped short of confirming reports Reus has a release clause.
"We never talk about contract details."
Watzke was more forthcoming on the subject of Kagawa. Since his 2012 move to Manchester United, the Japan international has failed to show the scintillating form that made him a household name in Germany during his two-year spell in Dortmund.
Nuri Sahin found himself cast out at Real Madrid and relaunched his career by moving back to Dortmund, but Kagawa is unlikely to get the same opportunity, despite media speculation to the contrary.
"There is absolutely nothing in this whole thing," Watzke said. "Our squad building is, more or less, done."
Reus had been expected to star for his country at the World Cup only for an ankle ligament tear, sustained in a pre-tournament friendly with Armenia, to deny him the opportunity to go to Brazil.
The former Borussia Monchengladbach man turned down an invitation to watch his teammates win football's ultimate prize in Rio de Janeiro as he was single-mindedly continuing his comeback from the injury.
The Super Cup encounter with Bayern may come too soon for him to feature in the Bundesliga season's traditional curtain-raiser, but Reus told kicker he is well along the road to recovery.
"I'm a little bit ahead of schedule," he said. "Let's hope it continues like this. It's no use putting myself under pressure. I will start playing again when am 100 percent fit.
Explained why he had not travelled to Brazil, he said: "I was totally focused on my rehab-plan, and simply didn't want to interrupt my work for three or four days. Everyone understood that."