West Ham United and Tottenham Hotspur are struggling to sell naming rights to their stadium.
Spurs are still in the process of building their ground, which has taken longer than first anticipated.
And Tottenham are struggling to agree a deal with prospective buyers for the naming rights of the stadium.
Daniel Levy is said to be most hopeful of doing a deal with a Chinese business, which could be worth around £200 million, but there has been a lack of interest so far.
West Ham are also said to be struggling to find business who want to buy the naming rights to the London Stadium.
West Ham reportedly have been in talks with a number of big firms, but have failed to agree a price with any of them.
Tottenham may now be forced to drop their asking price for the naming rights of their new ground, as Levy looks to maximise profits that he can make out of the stadium.
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