Tuttomercatoweb suggests that the 22-year old Danish centre-back will join the Whites on a season-long loan with the view to a permanent deal.
It is believed that Leeds will pay the Bianconeri around £400,000 (500,000) for the initial loan with a permanent transfer fee set at £2.8million (3.5m).
Sorensen kicked off his career with the Old Lady of Turin in 2010 before joining Bologna in January 2012.
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