BBC Sport says the offer fell well short of Wolves' £40m valuation of the Norway international.
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Wolves are willing to sell Strand Larsen this month, but only for their set asking price.
The new valuation comes after Newcastle United had offers of £50m and £55m for Strand Larsen rejected in August.
Along with Leeds, Nottingham Forest and Crystal Palace are also keen - though Strand Larsen's price may prove too steep.