Gundogan has been an unsung hero for the German side this season as they reach to Champions League final at Wembley where they will face fellow Bundesliga club Bayern Munich.
The £17million rated central midfield man would be the second Dortmund ace to leave the club this summer after Mario Gotze confirmed his move to Bayern Munich last week.
United are keen to add quality to their central midfield role to partner the impressive Michael Carrick after the likes of Tom Cleverley, Paul Scholes and Phil Jones have failed to hit form leaving Wayne Rooney to be the deepest of the four midfielders on numerous occasions this term.
“It is not reprehensible to answer such questions (of a future career in England or Spain) with ‘yes’,” Gundogan told Sport Bild.
“Everyone has a childhood dream on what he would like to achieve one day and my dream always was to play in England or Spain.”
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