United attempted to sign Haaland in the January transfer window but the 20-year-old snubbed a move over concerns about his own long-term success at the club.
Haaland has also been linked with a move to Manchester City with many supporters viewing him as the ideal successor to Sergio Aguero at the Etihad.
Get the latest breaking Manchester United transfer news and analysis every day direct to your inbox with our free MUFC newsletterSign up here - it only takes a few seconds.Both sides might be tempted to make an approach for Haaland at some point in the new year but Zorc insists Dortmund are planning for the future with Haaland in their squad."We plan for the long term with Erling. [Rumours] do not have to be dealt with at all," the director.
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