Borussia Dortmund midfielder Marco Reus has suffered serious injury in Bundesliga action yesterday.
Reus broke down during the clash with Paderborn.
The club said they did not expect to have a full diagnosis until at least Sunday, but Reus' latest injury will have sent warning signs over his fragility to Premier League clubs including Chelsea and Manchester City who are tracking the winger.
Dortmund's sporting director Michael Zorc told the club's website that Reus could have suffered "a lateral ankle ligament rupture" according to the team doctor's initial diagnosis.
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