The attacker is at the center of a five-way Premier League tug of war after Lees failed to gain promotion.
The Elland Road club were beaten in the Championship playoff final by Southampton on Sunday.
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Per The Sun, they must now sell Summerville to ensure they are balancing the books.
The 22-year-old is valued between 35-40 million, with Leeds hopeful for a bidding war.
The likes of Chelsea, Liverpool, West Ham, Fulham, and Bournemouth are all interested.