Get the biggest City transfer window stories, analysis and updates delivered straight to your inbox Real Sociedad frontman Alexander Isak could spark interest from his old side Borussia Dortmund this summer, and such a move would be a huge boost to Manchester City's efforts to sign Erling Haaland.
Sweden striker Isak played for Dortmund for two years, heralded by many within the club as the ideal Pierre-Emerick Aubameyang replacement, who left for Arsenal in January 2018.
However, the commanding forward struggled to make his mark at the Bundesliga side and eventually departed for La Liga side Real Sociedad two years ago.
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