Marco Reus would prefer a move to Barcelona if he doesn't remain at Borussia Dortmund, according to Bild.

Reus is under contract at Dortmund through 2017, but there is a release clause in his deal at just €25 million. 

Reus' "heart" is to remain with Dortmund, but "the head says Bayern."

Reus could reunite with former Dortmund teammates in Mario Götze and Robert Lewandowski while remaining in Germany.

Manchester City would likely offer Reus the largest contract.