However, Bayer are confident they hold all the cards, with Leno tied to the Bundesliga giants until 2019.
Should Arsenal firm up their interest, Bayer sources insist the 22 year-old will not leave for less than €20 million.
Leno, however, admitted at the start of the season: "The foreign option is certainly appealing. A new language, a new culture - that I could definitely even imagine."
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