Speculation has mounted that the Spanish side are keen to bring in a forward for the coming season.
The South Korean has barely featured for Arsenal and could move to the newly promoted side on loan with a view to a permanent switch.
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Who of Europe’s top strikers will move to England this summer?
After a dreadful start to their Bundesliga campaign, Borussia Dortmund appear to have weathered the storm after going five matches without defeat.